APA (7th ed.) Citation

Barker, L. L., Wahlers, K. J., & Watson, K. W. (2001). Groups in process: An introduction to small group communication (6th ed.). Allyn and Bacon.

Chicago Style (17th ed.) Citation

Barker, Larry L., Kathy J. Wahlers, and Kittie W. Watson. Groups in Process: An Introduction to Small Group Communication. 6th ed. Boston: Allyn and Bacon, 2001.

MLA (9th ed.) Citation

Barker, Larry L., et al. Groups in Process: An Introduction to Small Group Communication. 6th ed. Allyn and Bacon, 2001.