Cita APA (7th ed.)
Piper, O. A. (1941). The Christian interpretation of sex. Charles Scribner's Sons.
Cita Chicago (17th ed.)
Piper, Otto A. The Christian Interpretation of Sex. New York, NY: Charles Scribner's Sons, 1941.
Cita MLA (9th ed.)
Piper, Otto A. The Christian Interpretation of Sex. Charles Scribner's Sons, 1941.
Atenció: Aquestes cites poden no estar 100% correctes.