APA (7th ed.) Citation

Ephross, P. H., & Vassil, T. V. (2005). Groups that work: Structure and process (2nd ed.). Columbia University Press.

Chicago Style (17th ed.) Citation

Ephross, Paul H., and Thomas V. Vassil. Groups That Work: Structure and Process. 2nd ed. New York: Columbia University Press, 2005.

MLA (9th ed.) Citation

Ephross, Paul H., and Thomas V. Vassil. Groups That Work: Structure and Process. 2nd ed. Columbia University Press, 2005.