Italics - Proper Grammer for Business Writing

Those confounded italics. I can never remember how to use them properly--particularly, am I suppose to use them when mentioning titles of books, articles, etc?

Since I often cited books as my source in this blog, I'm composing this as a quick reference. Use italics in the following scenarios:

To set forth titles of separately published works--plays, books, symphonies, pamphlets, magazines, newspapers, and similar

• Romeo and Juliet (play)
• Gone with the Wind (novel)
• Aida (opera)
• The Dip (ebook/newsletter)
• The New York Times (newspaper)

To emphasize or contrast

• consider your present acts, not your past

To set forth names of ships or airplanes

• Airforce One
• The Titanic
• The Spirit of St. Louis

To set forth words in a foreign language

• she cried out, "C'est defender!" ("it is forbidden")

Note: if the word has become common in usage, then italics are not necessary, e.g.

• Latin: bona fide, et cetera
• French: encore, cafe, ensemble
• German: delicatessen

To indicate a word, letter, or number

• dot your i's and cross your t's

 Some sources also cite that italicized words should also be bolded.