Johnson, D. W., & Johnson, F. P. (1997). Joining together: Group theory and group skills (6th ed.). Allyn and Bacon.
Цитирование в стиле Чикаго (17-е изд.)Johnson, David W., и Frank Pierce Johnson. Joining Together: Group Theory and Group Skills. 6th ed. Boston: Allyn and Bacon, 1997.
Цитирование MLA (9-е изд.)Johnson, David W., и Frank Pierce Johnson. Joining Together: Group Theory and Group Skills. 6th ed. Allyn and Bacon, 1997.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.