Gaya APA

S., T, A. (1981). General index Summa theologiae, (by) T.C.O'Brien. OP. . London: Eyre & Spottiswoode.

Gaya MLA

S., Thomas, Aquinas,. "General index Summa theologiae, (by) T.C.O'Brien. OP. ". London: Eyre & Spottiswoode, 1981. Buku.