Cita APA (7th ed.)
Farrell, W. (1940). A companion to the Summa (1 ed.). Sheed & Ward.
Cita Chicago (17th ed.)
Farrell, Walter. A Companion to the Summa. 1 ed. New York: Sheed & Ward, 1940.
Cita MLA (9th ed.)
Farrell, Walter. A Companion to the Summa. 1 ed. Sheed & Ward, 1940.
Atenció: Aquestes cites poden no estar 100% correctes.