Combs, A. W., Avila, D. L., & Purkey, W. W. (1971). Helping relationships: Basic concepts for the helping professions. Allyn and Bacon.
Цитирование в стиле Чикаго (17-е изд.)Combs, Arthur W., Donald L. Avila, и William W. Purkey. Helping Relationships: Basic Concepts for the Helping Professions. Boston: Allyn and Bacon, 1971.
Цитирование MLA (9-е изд.)Combs, Arthur W., et al. Helping Relationships: Basic Concepts for the Helping Professions. Allyn and Bacon, 1971.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.