APA (7e ed.) Bronvermelding

Johnson, D. W. (1982). Joining together: Group theory and group skills. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Johnson, David W. Joining Together: Group Theory and Group Skills. Prentice-Hall, 1982.

MLA (8e ed.) Bronvermelding

Johnson, David W. Joining Together: Group Theory and Group Skills. Prentice-Hall, 1982.

Let op: Deze citaties zijn niet altijd 100% accuraat.