Cita APA (7a ed.)

Wilson, S. (1978). Informal groups: An introduction. Prentice-Hall.

Cita Chicago Style (17a ed.)

Wilson, Stephen. Informal Groups: An Introduction. New Jersey: Prentice-Hall, 1978.

Cita MLA (9a ed.)

Wilson, Stephen. Informal Groups: An Introduction. Prentice-Hall, 1978.