APA (7th ed.) Citation

Thomas,, 1. (1968). Summa theologiae / by St. Thomas Aquinas. Blackfriars.

Chicago Style (17th ed.) Citation

Thomas,, 1225?-1274. Summa Theologiae / by St. Thomas Aquinas. Blackfriars, 1968.

MLA (9th ed.) Citation

Thomas,, 1225?-1274. Summa Theologiae / by St. Thomas Aquinas. Blackfriars, 1968.

Warning: These citations may not always be 100% accurate.