Cita APA (7a ed.)

Pieper, J. (1962). Introduction to Thomas Aquinas. Faber and Faber.

Cita Chicago Style (17a ed.)

Pieper, Josef. Introduction to Thomas Aquinas. London: Faber and Faber, 1962.

Cita MLA (9a ed.)

Pieper, Josef. Introduction to Thomas Aquinas. Faber and Faber, 1962.