Cita APA (7a ed.)

Lerner, R., Mahdi, M., & Fortin, E. L. (1991). Medieval political philosophy: A sourcebook ([7th printing].). Cornell University Press.

Cita Chicago Style (17a ed.)

Lerner, Ralph, Muhsin Mahdi, y Ernest L. Fortin. Medieval Political Philosophy: A Sourcebook. [7th printing]. Ithaca [etc.]: Cornell University Press, 1991.

Cita MLA (9a ed.)

Lerner, Ralph, et al. Medieval Political Philosophy: A Sourcebook. [7th printing]. Cornell University Press, 1991.