APA (7th ed.) Citation

Cassidy, F. G. (1970). Modern American plays ([1st ed.].). Books for Libraries Press.

Chicago Style (17th ed.) Citation

Cassidy, Frederic G. Modern American Plays. [1st ed.]. Freeport, N.Y.: Books for Libraries Press, 1970.

MLA (9th ed.) Citation

Cassidy, Frederic G. Modern American Plays. [1st ed.]. Books for Libraries Press, 1970.