Cita APA (7a ed.)

Douglas, T. (1983). Groups: Understanding people gathered together. Tavistock.

Cita Chicago Style (17a ed.)

Douglas, Tom. Groups: Understanding People Gathered Together. London New York: Tavistock, 1983.

Cita MLA (8a ed.)

Douglas, Tom. Groups: Understanding People Gathered Together. Tavistock, 1983.