APA (7th ed.) Citation

Lerner, R., Mahdi, M., & Fortin, E. L. (1963). Medieval political philosophy: A sourcebook. Free Press of Glencoe.

Chicago Style (17th ed.) Citation

Lerner, Ralph, Muhsin Mahdi, and Ernest L. Fortin. Medieval Political Philosophy: A Sourcebook. [New York]: Free Press of Glencoe, 1963.

MLA (8th ed.) Citation

Lerner, Ralph, et al. Medieval Political Philosophy: A Sourcebook. Free Press of Glencoe, 1963.