APA aipamena

Johnson, D. W., & Johnson, F. P. (2009). Joining together: Group theory and group skills (10th ed.). Pearson Education.

Chicago Style aipamena

Johnson, David W., and Frank P. Johnson. Joining Together: Group Theory and Group Skills. 10th ed. Upper Saddle River, N.J: Pearson Education, 2009.

MLA aipamena

Johnson, David W., and Frank P. Johnson. Joining Together: Group Theory and Group Skills. 10th ed. Pearson Education, 2009.