APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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