Punctuation and Usage
One space follows all punctuation, including periods and colons.
Periods and commas are always placed inside quotation marks; all other punctuation is placed outside quotation marks, unless part of the material being quoted.
Italicize the titles of books, newspapers, magazines, films and programs. Enclose in quotation marks the titles of essays, book chapters or course chapters.
Place a comma after all dates, including the year.
For example:
According to your April 15, 2023, letter….
However, commas do not separate seasons and months (without dates) from their years.
For example:
The report will be released in spring 2023.
She expected the letter in May 2023.
(Note: Seasons – fall, winter, spring and summer – are lowercased.)
Place a comma after all cities when followed by their states. Place another comma after the state.
For example:
She talked to the Linthicum, Maryland, reporter.
He found the release had a Linthicum, Md., dateline.
(Note: AP style is used in abbreviating state names.)
AP Style lists 30 U.S. cities that do not need to be followed by the name of a state:
ATLANTA
BALTIMORE
BOSTON
CHICAGO
CINCINNATI
CLEVELAND
DALLAS
DENVER
DETROIT
HONOLULU
HOUSTON
INDIANAPOLIS
LAS VEGAS
LOS ANGELES
MIAMI
MILWAUKEE
MINNEAPOLIS
NEW ORLEANS
NEW YORK
OKLAHOMA CITY
PHILADELPHIA
PHOENIX
PITTSBURGH
ST. LOUIS
SALT LAKE CITY
SAN ANTONIO
SAN DIEGO
SAN FRANCISCO
SEATTLE
WASHINGTON
“i.e.” means “that is”; “e.g.” means “for example.” The two abbreviations are not interchangeable. Both are lowercased; neither is italicized.
For example:
Meetings will be held on Core Days, i.e., Tuesdays and Wednesdays.
We are looking for a diverse group of subspecialties, e.g., pediatrics, oncology and endourology.