APA (7th ed.) Citation

Shakespeare, W., & Elam, K. (2008). Twelfth night, or, what you will. Arden Shakespeare.

Chicago Style (17th ed.) Citation

Shakespeare, William, and Keir Elam. Twelfth Night, or, What You Will. London: Arden Shakespeare, 2008.

MLA (9th ed.) Citation

Shakespeare, William, and Keir Elam. Twelfth Night, or, What You Will. Arden Shakespeare, 2008.