Cita APA (7th ed.)
Wilson, S. (1978). Informal groups: An introduction. Prentice-Hall.
Cita Chicago (17th ed.)
Wilson, Stephen. Informal Groups: An Introduction. New Jersey: Prentice-Hall, 1978.
Cita MLA (9th ed.)
Wilson, Stephen. Informal Groups: An Introduction. Prentice-Hall, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.