Cita APA (7th ed.)

Family Service Units, Jenkins, M., & Gorney, C. (1976). Groups: A handbook. Family Service Units.

Cita Chicago (17th ed.)

Family Service Units, Martin Jenkins, i Carolyn Gorney. Groups: A Handbook. [London] ([207 Old Marylebone Rd, N.W.1]): Family Service Units, 1976.

Cita MLA (8th ed.)

Family Service Units, et al. Groups: A Handbook. Family Service Units, 1976.