RAY, C. M. (1983). Supervision. Dryden Press.
Cita Chicago (17th ed.)RAY, Charles M. Supervision. Dryden Press, 1983.
Cita MLA (9th ed.)RAY, Charles M. Supervision. Dryden Press, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)