Knudsen, R. B. (1976). New models for creative giving. Association press.
Cita Chicago (17th ed.)Knudsen, Raymond B. New Models for Creative Giving. New York: Association press, 1976.
Cita MLA (9th ed.)Knudsen, Raymond B. New Models for Creative Giving. Association press, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.