Cita APA (7th ed.)

Johnson, D. W., & Johnson, F. P. (1987). Joining together: Group theory and group skills. Prentice-Hall International.

Cita Chicago (17th ed.)

Johnson, David W., i Frank Pierce Johnson. Joining Together: Group Theory and Group Skills. London: Prentice-Hall International, 1987.

Cita MLA (9th ed.)

Johnson, David W., i Frank Pierce Johnson. Joining Together: Group Theory and Group Skills. Prentice-Hall International, 1987.