Cita APA (7a ed.)

Pegis, A. C. (1948). Introduction to Saint Thomas Aquinas. Modern library.

Cita Chicago Style (17a ed.)

Pegis, Anton Charles. Introduction to Saint Thomas Aquinas. New York: Modern library, 1948.

Cita MLA (9a ed.)

Pegis, Anton Charles. Introduction to Saint Thomas Aquinas. Modern library, 1948.