APA (7th ed.) Citation

Feiffer, J. (1976). Knock, knock: A play. Hill and Wang.

Chicago Style (17th ed.) Citation

Feiffer, Jules. Knock, Knock: A Play. New York: Hill and Wang, 1976.

MLA (9th ed.) Citation

Feiffer, Jules. Knock, Knock: A Play. Hill and Wang, 1976.