Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Glassman, Urania, e Len Kates. Group Work: A Humanistic Approach. Newbury Park, Calif: Sage Publications, 1990.

Citatione MLA (9a ed.)

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