APA-referens (7:e uppl.)

Gruen, F. B., & Oisy, E. d. (1930). Catechism of the Third Order (15th ed.). Franciscan Herald Press.

Chicago-referens (17:e uppl.)

Gruen, Ferdinand Bernard, och Eugène d' Oisy. Catechism of the Third Order. 15th ed. Chicago, Ill.: Franciscan Herald Press, 1930.

MLA-referens (8:e uppl.)

Gruen, Ferdinand Bernard, och Eugène d' Oisy. Catechism of the Third Order. 15th ed. Franciscan Herald Press, 1930.