APA (7th ed.) Citation

Thomas von Aquin, H., & Gilby, T. (2006). Summa theologiae. Cambridge University Press.

Chicago Style (17th ed.) Citation

Thomas von Aquin, Heiliger, and Thomas Gilby. Summa Theologiae. Cambridge: Cambridge University Press, 2006.

MLA (9th ed.) Citation

Thomas von Aquin, Heiliger, and Thomas Gilby. Summa Theologiae. Cambridge University Press, 2006.