APA (7th ed.) Citation

Catholic Church & Markert, F. (1931). My companion: A simple prayer book worthy of being your daily companion. Messenger Corp..

Chicago Style (17th ed.) Citation

Catholic Church and F. Markert. My Companion: A Simple Prayer Book Worthy of Being Your Daily Companion. Chicago, Ill.: Messenger Corp., 1931.

MLA (8th ed.) Citation

Catholic Church and F. Markert. My Companion: A Simple Prayer Book Worthy of Being Your Daily Companion. Messenger Corp., 1931.