Wittenberg, P. J. (1937). The Protection and marketing of literary property. J. Messner.
Cita Chicago (17th ed.)Wittenberg, Philip J. The Protection and Marketing of Literary Property. New York: J. Messner, 1937.
Cita MLA (9th ed.)Wittenberg, Philip J. The Protection and Marketing of Literary Property. J. Messner, 1937.
Atenció: Aquestes cites poden no estar 100% correctes.