Parker, W. (1974). Prayer can change your life. Pocket Books.
Cita Chicago (17th ed.)Parker, William. Prayer Can Change Your Life. New York, Estados Unidos: Pocket Books, 1974.
Cita MLA (9th ed.)Parker, William. Prayer Can Change Your Life. Pocket Books, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.