The names of ships, trains, aircraft, and spacecraft are also italicized. All other titles are enclosed in quotation marks. In research papers and manuscripts submitted for publication, indicate italics by underlining. If your instructor gives you permission, you may use an italic font. The Philadelphia Inquirer Articles and names of cities are italicized only when they are part of the title.
Punctuation is italicized when it is part of a title.
Trains City of New Orleans Orient Express Aircraft Hindenburg Enola Gay Only particular aircraft, not makes or types such as Boeing 747, are italicized. Phrases Thousands of foreign words and phrases are now considered part of the English language. These words receive no special treatment. Spirochaeta plicatilis, Treponema pallidum, and Spirilbum minus all are bacteria with corkscrew-like shapes. If you are not sure whether a foreign word has been assimilated into English, consult a dictionary.