APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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