Quotations introduced by that are regarded as in indirect discourse and not enclosed in quotation marks.
Keats declares that beauty is truth, truth beauty.
Proverbial expressions and familiar phrases of literary origin require no quotation marks.
These are the times that try men's souls.
He lives far from the madding crowd.
The same is true of colloquialisms and slang.
References. In scholarly work requiring exact references, abbreviate titles that occur frequently, giving the full forms in an alphabetical list at the end. As a general practice, give the references in parenthesis or in footnotes, not in the body of the sentence. Omit the words act, scene, line, book, volume, page, except when referring by only one of them. Punctuate as indicated below.
| In the second scene of the third act | In III.ii (still better, simply insert III.ii in parenthesis at the proper place in the sentence) |
After the killing of Polonius, Hamlet is placed under guard (IV.ii. 14).
2 Samuel i:17–27