Cita APA (7th ed.)
Ohlsen, M. M. (1970). Group counseling. Holt, Rinehart and Winston.
Cita Chicago (17th ed.)
Ohlsen, Merle M. Group Counseling. New York: Holt, Rinehart and Winston, 1970.
Cita MLA (9th ed.)
Ohlsen, Merle M. Group Counseling. Holt, Rinehart and Winston, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.