Cita APA (7a ed.)

Carkhuff, R. R. (1984). Helping and human relations. Human Resource Development Press.

Cita Chicago Style (17a ed.)

Carkhuff, Robert R. Helping and Human Relations. Amherst, Mass: Human Resource Development Press, 1984.

Cita MLA (9a ed.)

Carkhuff, Robert R. Helping and Human Relations. Human Resource Development Press, 1984.