Punctuation Marks Purdue OWL • Brief Overview of Punctuation:

Punctuation Marks
Adapted from the following Purdue OWL webpages:
• Brief Overview of Punctuation: http://owl.english.purdue.edu/owl/resource/566/01/
• The Apostrophe: http://owl.english.purdue.edu/owl/resource/621/1/
• Hyphen Use: http://owl.english.purdue.edu/owl/resource/576/1/
1. Use a semicolon to join 2 independent clauses when the second clause restates or states the reason for
the first or when the two clauses are of equal emphasis.
Road construction in Dallas has hindered travel around town; streets have become covered with
bulldozers, trucks, and cones.
2. Use a semicolon to join 2 independent clauses when the second clause begins with a conjunctive
adverb ("however," "therefore," "moreover," "meanwhile," "nonetheless," "otherwise," etc.) or a
transition ("in fact," "for example," "in addition," "in other words," "on the other hand," etc.).
Terrorism in the United States has become a recent concern; in fact, the concern for America's
safety has led to an awareness of global terrorism.
3. Use a semicolon to join elements of a series when individual items of the series already include
Recent sites of the Olympic Games include Athens, Greece; Salt Lake City, Utah; Sydney,
Australia; Nagano, Japan.
1. Use a colon to join 2 independent clauses when you wish to emphasize the second clause.
Road construction in Dallas has hindered travel around town: parts of Main, Fifth, and West
Street are closed during the construction.
2. Use a colon after an independent clause when it is followed by a list, appositive, or a quotation.
Julie went to the store for some groceries: milk, bread, coffee, and cheese.
I know the perfect job for her: a politician.
In his Gettysburg Address, Abraham Lincoln urges his audience to rededicate themselves to
completing the work of the soldiers: "It is for us the living rather to be dedicated here to the
unfinished work which they who fought here have thus far so nobly advanced."
Note: When the introductory phrase is not a complete sentence, use a comma instead of a colon between
the introduction and the quotation:
In his Gettysburg Address, Abraham Lincoln states, "It is for us the living rather to be dedicated
here to the unfinished work which they who fought here have thus far so nobly advanced."
3. Colons are also used in salutations in formal business letters, time expressions, and Biblical references
(between chapter and verse):
To Whom It May Concern:
12:00 p.m.
Matthew 1:6
1. Use parentheses to set off additional information such as dates or details. (The sentence is still a
sentence if the phrase or clause containing the information in parentheses is left out).
Muhammed Ali (1942-present), arguably the greatest athlete of all time, claimed he would "float
like a butterfly, sting like a bee."
Thirty-five years after his death, Robert Frost (he spoke eloquently at President Kennedy's
inauguration) remains America's favorite poet.
If the material within your parentheses is a separate sentence (not included within another sentence),
punctuate it as if it were a separate sentence, with the period inside the closing quotation mark.
Thirty-five years after his death, Robert Frost remains America's favorite poet. (We remember
him at Kennedy's inauguration.)
2. Use parentheses to set off sources of in-text citations.
APA style is a difficult citation format for first-time learners (Jones, 1998, p. 199).
1. Dashes are used to set off or emphasize the content. Dashes place more emphasis on this content than
Dashes may come in pairs to emphasize whatever comes between the two dashes:
Perhaps one reason why the term has been so problematic—so resistant to definition, and yet so
transitory in those definitions—is because of its multitude of applications.
In terms of public legitimacy—that is, in terms of garnering support from state legislators,
parents, donors, and university administrators—English departments are primarily places where
advanced literacy is taught.
Or dashes may be used singly, to emphasize words at the end of the sentence:
The U.S.S. Constitution became known as "Old Ironsides" during the War of 1812—during
which the cannonballs fired from the British H.M.S. Guerriere merely bounced off the sides of
the Constitution.
To some of you, my proposals may seem radical—even revolutionary.
The dash is a handy device, informal and essentially playful, telling you that you're
about to take off on a different tack but still in some way connected with the
present course — only you have to remember that the dash is there, and either put
a second dash at the end of the notion to let the reader know that he's back on
course, or else end the sentence, as here, with a period.
2. Use a dash to set off an appositive phrase that already includes commas. (An appositive is a word that
adds explanatory or clarifying information to the noun that precedes it.)
The cousins—Tina, Todd, and Sam—arrived at the party together.
Quotation Marks
1. Use quotation marks to enclose direct quotations. Note that commas and periods are placed inside the
closing quotation mark, and colons and semicolons are placed outside. The placement of question and
exclamation marks depends on the situation.
He asked, "When will you be arriving?" I answered, "Sometime after 6:30."
2. Use quotation marks to indicate the novel, ironic, or reserved use of a word.
History is stained with blood spilled in the name of "justice."
3. Use quotation marks around the titles of short poems, song titles, short stories, magazine or newspaper
articles, essays, speeches, chapter titles, short films, and episodes of television or radio shows.
"Self-Reliance" (short poem by Ralph Waldo Emerson)
"Just Like a Woman" (song by Bob Dylan)
Note: The short work is put in quotation marks; the long work in which it appears is italicized or
"The Smelly Car," an episode of Seinfeld ("The Smelly Car" is the title of an episode; Seinfeld is
the name of the TV series in which it appeared.)
"Gambling Means More Crime," an editorial in Honolulu Advertiser ("Gambling Means More
Crime " is the title of the editorial; Honolulu Star Advertiser is the name of the newspaper in
which it appeared.)
"Kahalaopuna: Daughter of Mānoa's Rain and Wind," a story in Ancient O‘ahu: Stories from
Thrum and Fornander ("Kahalaopuna: Daughter of Mānoa's Rain and Wind" is the title of the
story; Ancient O‘ahu: Stories from Thrum and Fornander is the name of the book in which it
Note: For long quotations (over 40 words), use block quotation (indenting) instead of quotation marks:
In his Gettysburg Address, Abraham Lincoln urges Americans to rededicate themselves to the unfinished
work of the deceased soldiers:
It is for us the living rather to be dedicated here to the unfinished work which they who fought
here have thus far so nobly advanced." It is rather for us to be here dedicated to the great task
remaining before us — that from these honored dead we take increased devotion to that cause for
which they gave the last full measure of devotion — that we here highly resolve that these dead
shall not have died in vain, that this nation under God shall have a new birth of freedom, and that
government of the people, by the people, for the people shall not perish from the earth.
Italics (or Underlining)
Italics and Underlining may be used interchangeably. Before word-processing programs were widely
available, writers would underline certain words to indicate to publishers to italicize whatever was
underlined. Although the general trend has been moving toward italicizing instead of underlining, you
should remain consistent with your choice throughout your paper.
1. Italicize the titles of magazines, books, newspapers, academic journals, films, television shows, long
poems, plays of three or more acts, operas, musical albums, works of art, websites, and individual trains,
planes, or ships.
Time (a magazine)
Romeo and Juliet (a five-act play by William Shakespeare)
The Metamorphosis of Narcissus (a work of art by Salvador Dali)
Amazon.com (a website)
Titanic (a ship)
2. Italicize foreign words.
Semper fi, the motto of the U.S. Marine Corps, means "always faithful."
3. Italicize a word or phrase to add emphasis.
The truth is of utmost concern!
4. Italicize a word when referring to that word.
The word justice is often misunderstood and therefore misused.
1. Use an Apostrophe to Form the Possessive For of a Noun
To see if you need to make a possessive, turn the phrase around and make it an "of the..." phrase. For
the boy's hat = the hat of the boy
three days' journey = journey of three days
If the noun after "of" is a building, an object, or a piece of furniture, then no apostrophe is needed!
room of the hotel = hotel room
door of the car = car door
leg of the table = table leg
Once you've determined whether you need to make a possessive, follow these rules to create one.
Add 's to the singular form of the word (even if it ends in -s):
the owner's car
James's hat (James' hat is also acceptable.)
For plural proper nouns that are possessive, use an apostrophe after the 's':
The Eggles' presentation was good. (The Eggles are a husband and wife consultant team.)
add 's to the plural forms that do not end in -s:
the children's game
the geese's honking
add ' to the end of plural nouns that end in -s:
two cats' toys
three friends' letters
the countries' laws
add 's to the end of compound words:
my brother-in-law's money
add 's to the last noun to show joint possession of an object:
Todd and Anne's apartment
2. Use an apostrophe to show the omission of a letter or letters
Apostrophes are used in contractions. A contraction is a word (or set of numbers) in which one or more
letters (or numbers) have been omitted. The apostrophe shows this omission. Contractions are common in
speaking and in informal writing. To use an apostrophe to create a contraction, place an apostrophe where
the omitted letter(s) would go. Here are some examples:
don't = do not
I'm = I am
he'll = he will
who's = who is
shouldn't = should not
could've= could have (NOT "could of"!)
'60 = 1960
3. Use an apostrophe to for the plural of lowercase letters.
Apostrophes are used to form plurals of letters that appear in lowercase; here the rule appears to be more
typographical than grammatical, e.g. "three ps" versus "three p's." To form the plural of a lowercase letter,
place 's after the letter. There is no need for apostrophes indicating a plural on capitalized letters,
numbers, and symbols (though keep in mind that some editors, teachers, and professors still prefer them).
Here are some examples:
p's and q's = a phrase believed to be taken from the early days of the printing press when letters were set
in presses backwards so they would appear on the printed page correctly. Although the origins of this
phrase are disputed, the expression was used commonly to mean, "Be careful, don't make a mistake."
Today, the term also indicates maintaining politeness, possibly from "mind your pleases and thank-yous."
Nita's mother constantly stressed minding one's p's and q's.
three Macintosh G4s = three of the Macintosh model G4
There are two G4s currently used in the writing classroom.
many &s = many ampersands
That printed page has too many &s on it.
the 1960s = the years in decade from 1960 to 1969
The 1960s were a time of great social unrest.
The '60s were a time of great social unrest.
Note: Apostrophes should not be used with possessive pronouns because possessive pronouns already
show possession — they don't need an apostrophe. His, her, its, my, yours, ours are all possessive
pronouns. Here are some examples:
wrong: his' book
correct: his book
correct: one's book
correct: anybody's book
wrong: Who's dog is this?
correct: Whose dog is this?
wrong: The group made it's decision.
correct: The group made its decision.
Note: A common error results from the confusion between "its" and "it's":
"It's" is a contraction for "it is."
"Its" is a possessive pronoun meaning "belonging to it."
It's raining out = it is raining out.
Two words brought together as a compound may be written separately, written as one word, or connected
by hyphens. For example, three modern dictionaries all have the same listings for the following
hair stylist
Another modern dictionary, however, lists hairstylist, not hair stylist. Compounding is obviously in a state
of flux, and authorities do not always agree in all cases, but the uses of the hyphen offered here are
generally agreed upon.
1. Use a hyphen to join two or more words serving as a single adjective before a noun:
a one-way street
chocolate-covered peanuts
well-known author
However, when compound modifiers come after a noun, they are not hyphenated:
The peanuts were chocolate covered.
The author was well known.
2. Use a hyphen with compound numbers.
Our much-loved teacher was sixty-three years old.
3. Use a hyphen to avoid confusion or an awkward combination of letters.
re-sign a petition ("Re-sign" is different from "resign" as in "resign from a job.")
shell-like ("Shelllike" with three l's in a row is awkward; but "childlike," without a hyphen is
4. Use a hyphen with the prefixes ex- (meaning former), self-, all-; with the suffix -elect; between a prefix
and a capitalized word; and with figures or letters:
pre-Civil War