Lua APA (7ú heag.)
Farrell, W. (1940). A companion to the Summa (1 ed.). Sheed & Ward.
Lua i Stíl Chicago (17ú heag.)
Farrell, Walter. A Companion to the Summa. 1 ed. New York: Sheed & Ward, 1940.
Lua MLA (9ú heag.)
Farrell, Walter. A Companion to the Summa. 1 ed. Sheed & Ward, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.