APA (7th ed.) Citation

Yalom, I. D., & Lieberman, M. A. (1973). Encounter Groups: First facts. Basic Books.

Chicago Style (17th ed.) Citation

Yalom, Irvin D., and Morton A. Lieberman. Encounter Groups: First Facts. Basic Books, 1973.

MLA (8th ed.) Citation

Yalom, Irvin D., and Morton A. Lieberman. Encounter Groups: First Facts. Basic Books, 1973.

Warning: These citations may not always be 100% accurate.