Italics and Boldface
http://www.itcfonts.com/Ulc/2721/ItalicsBoldface.htm

Strizver, Ilene
Upper and lowercase Magazine
2001

Abstract:

When it’s time to emphasize a word or phrase, do you automatically reach for the font style menu? Boldface and italics are two of the most common techniques for lending emphasis to text, but these basic typographic tools are often used incorrectly. Here’s how the pros handle text that needs to stand out from the crowd.