Cita APA (7a ed.)

Leff, G. (1970). Medieval Thought: St. Augustine to Ockham (1st ed., 4th repr.). Penguin Books.

Cita Chicago Style (17a ed.)

Leff, Gordon. Medieval Thought: St. Augustine to Ockham. 1st ed., 4th repr. Harmondsworth: Penguin Books, 1970.

Cita MLA (9a ed.)

Leff, Gordon. Medieval Thought: St. Augustine to Ockham. 1st ed., 4th repr. Penguin Books, 1970.