A slogan or motto of only a few words is capped as in the original and put within quotation marks: The flag's message read "Don't Tread on Me." ... their motto, "Be Prepared."

How do you quote a slogan?

Set the slogan off from the rest of the text with quotation marks. Insert an open parenthesis after the last quotation mark on the slogan. Write the name of the author after the parenthetical mark. If the page has no noted author, write the title of the Web site in place of the author's name.

Should slogans have punctuation?

Most don't have periods. The ones that do do so to be more assertive, which is not something your particular tagline has to convey. The only exception is Microsoft's which is two separate clauses.