Cita APA (7a ed.)

Glassman, U., & Kates, L. (1990). Group work: A humanistic approach. Sage.

Cita Chicago Style (17a ed.)

Glassman, Urania, y Len Kates. Group Work: A Humanistic Approach. Newbury Park, California: Sage, 1990.

Cita MLA (9a ed.)

Glassman, Urania, y Len Kates. Group Work: A Humanistic Approach. Sage, 1990.