Cita APA (7a ed.)

Royden, A. M. (1923). Prayer as a force. Putnam's sons.

Cita Chicago Style (17a ed.)

Royden, A. Maude. Prayer as a Force. New York: Putnam's sons, 1923.

Cita MLA (9a ed.)

Royden, A. Maude. Prayer as a Force. Putnam's sons, 1923.