Cita APA (7th ed.)
Douglas, T. (2000). Basic groupwork (2nd ed.). Routledge.
Cita Chicago (17th ed.)
Douglas, Tom. Basic Groupwork. 2nd ed. London ; New York: Routledge, 2000.
Cita MLA (9th ed.)
Douglas, Tom. Basic Groupwork. 2nd ed. Routledge, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.