Find the exact location of the quote you are using. Most plays are divided into acts, sections and lines. Use those three numbers to cite the play.
Open the parentheses after you have finished your quote. For the in-quote citation, you will need to add the author and then a comma. Add the year of the edition's publication. Add another comma then the exact location of the quote. Close the parentheses and add a period.
Write the playwright's last name first for the works cited page. Add a comma then the first initial of the first name. Add a period. Put the date of publication in parenthesis. Add a period. Italicize the play's title. Add a period. Write the place of publication. Add a colon. Write the publication company. Finish with a period.