SHAKESPEARE IN MLA FORMAT

Italicize the names of plays.  This helps to avoid confusion when the title of the play is the same as the name of the main character

As with any literature or film, use present tense to convey the ongoing life of the work

When preparing the parenthetical citation for your citation, include the title of the play, the act number (as a Roman numeral), a period, the scene number (as a Roman numeral), a period, and the line numbers that you are citing (as Arabic numerals)

(Richard III V.iii.315-319) = a scene from Richard III, Act 5, scene 3, lines 315-319

When quoting four or more lines from Shakespeare, normally you should use block quotation, copying the line breaks as they occur in the original text; indent block quotations twice:  

Remember whom you are to cope withal:
A sort of vagabonds, rascals, and runaways,
A scum of Britains and base lackey peasants,
Whom their o'ercloyed country vomits forth
To desperate adventures and assur'd destruction.
(Richard III V.iii.315-319)

In quoting shorter passages in linear form within the body of a paragraph, you still need to indicate line breaks when Shakespeare is writing in verse:

Othello recalls, "Upon this hint I spake: / She lov'd me for the dangers I had pass'd, / And I lov'd her that she did pity them" (I.iii.166-168).

Notice that the final punctuation mark is not written until after the parenthetical citation. The slash marks indicate line breaks in the verse.

From http://public.wsu.edu/~delahoyd/shakespeare/mla.html