Medieval thought : St Augustine to Ockham.

MLA

Leff, Gordon. Medieval Thought : St Augustine to Ockham. Harmondsworth: Penguin books, 1958.

APA

Leff, G. (1958). Medieval thought : St Augustine to Ockham. Harmondsworth: Penguin books.

Chicago

Leff, Gordon Medieval Thought : St Augustine to Ockham. Harmondsworth: Penguin books, 1958.