Diedrich, R. C., & Dye, H. (1972). Group procedures: Purposes, processes, and outcomes. Houghton Mifflin.
Chicago Style (17. basım) AtıfDiedrich, Richard C., ve H.Allan Dye. Group Procedures: Purposes, Processes, and Outcomes. Boston: Houghton Mifflin, 1972.
MLA (9th ed.) AtıfDiedrich, Richard C., ve H.Allan Dye. Group Procedures: Purposes, Processes, and Outcomes. Houghton Mifflin, 1972.
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