APA (7th ed.) Citation
Aquino, T. d., & Pegis, A. C. Introduction to Saint Thomas Aquinas. Modern Library.
Chicago Style (17th ed.) Citation
Aquino, Tomás de, and Anton C. Pegis. Introduction to Saint Thomas Aquinas. Nueva York, EUA: Modern Library.
MLA (9th ed.) Citation
Aquino, Tomás de, and Anton C. Pegis. Introduction to Saint Thomas Aquinas. Modern Library.
Warning: These citations may not always be 100% accurate.