Clapp, J. (1974). Professional ethics and insignia. Scarecrow Press.
Cita Chicago (17th ed.)Clapp, Jane. Professional Ethics and Insignia. Metuchen, N.J: Scarecrow Press, 1974.
Cita MLA (9th ed.)Clapp, Jane. Professional Ethics and Insignia. Scarecrow Press, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.