MLA

Stevens, Martin. Four Middle English Mystery Cycles : Textual, Contextual, and Critical Interpretations. Princeton (N.J.): Princeton university press, 1987.

APA

Stevens, M. (1987). Four Middle English mystery cycles : textual, contextual, and critical interpretations. Princeton (N.J.): Princeton university press.

Chicago

Stevens, Martin, Four Middle English Mystery Cycles: Textual, Contextual, and Critical Interpretations. Princeton (N.J.): Princeton university press, 1987.