Cita APA (7th ed.)
Corey, M. S. (1993). Becoming a helper (2nd ed.). Brooks/Cole.
Cita Chicago (17th ed.)
Corey, Marianne Schneider. Becoming a Helper. 2nd ed. Pacific Grove, California: Brooks/Cole, 1993.
Cita MLA (9th ed.)
Corey, Marianne Schneider. Becoming a Helper. 2nd ed. Brooks/Cole, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.