Cita APA (7th ed.)
Carrel, A. (1939). Man the unknown. Harper & Brothers.
Cita Chicago (17th ed.)
Carrel, Alexis. Man the Unknown. New York: Harper & Brothers, 1939.
Cita MLA (9th ed.)
Carrel, Alexis. Man the Unknown. Harper & Brothers, 1939.
Atenció: Aquestes cites poden no estar 100% correctes.