Johnson, D. W., & Johnson, F. P. (2009). Joining together: Group theory and group skills (10th ed.). Pearson Education.
Цитирование в стиле Чикаго (17-е изд.)Johnson, David W., и Frank Pierce Johnson. Joining Together: Group Theory and Group Skills. 10th ed. Upper Saddle River, N.J: Pearson Education, 2009.
Цитирование MLA (9-е изд.)Johnson, David W., и Frank Pierce Johnson. Joining Together: Group Theory and Group Skills. 10th ed. Pearson Education, 2009.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.