APA (7th ed.) Citation

Miller, D. F. (1938). Why and how to pray often. Liguorian Pamphlet Office.

Chicago Style (17th ed.) Citation

Miller, D. F. Why and How to Pray Often. Oconomowoc, Wis.: Liguorian Pamphlet Office, 1938.

MLA (8th ed.) Citation

Miller, D. F. Why and How to Pray Often. Liguorian Pamphlet Office, 1938.