APA (7th ed.) Citation

Johnson, D. W., & Johnson, F. P. (1991). Joining together: Group theory and group skills (4th ed.). Allyn and Bacon.

Chicago Style (17th ed.) Citation

Johnson, David W., and Frank P. Johnson. Joining Together: Group Theory and Group Skills. 4th ed. Boston, Mass: Allyn and Bacon, 1991.

MLA (9th ed.) Citation

Johnson, David W., and Frank P. Johnson. Joining Together: Group Theory and Group Skills. 4th ed. Allyn and Bacon, 1991.