Cita APA (7a ed.)

Copleston, F. C., & Copleston, F. C. (1972). Ockham to Suárez. Search press [u.a.].

Cita Chicago Style (17a ed.)

Copleston, Frederick C., y Frederick C. Copleston. Ockham to Suárez. London [u.a.]: Search press [u.a.], 1972.

Cita MLA (8a ed.)

Copleston, Frederick C., y Frederick C. Copleston. Ockham to Suárez. Search press [u.a.], 1972.