Cita APA (7a ed.)

Carkhuff, R. R. (1974). Cry twice! Human Resource Development.

Cita Chicago Style (17a ed.)

Carkhuff, Robert R. Cry Twice! Amherst, Massachusetts: Human Resource Development, 1974.

Cita MLA (9a ed.)

Carkhuff, Robert R. Cry Twice! Human Resource Development, 1974.