APA (7th ed.) Citation

Cohen, J. Z., & Whiteley, J. M. (1970). Carl Rogers on Facilitating a Group. John Whiteley.

Chicago Style (17th ed.) Citation

Cohen, Joan Z., and John M. Whiteley. Carl Rogers on Facilitating a Group. Irvine, CA: John Whiteley, 1970.

MLA (9th ed.) Citation

Cohen, Joan Z., and John M. Whiteley. Carl Rogers on Facilitating a Group. John Whiteley, 1970.