Dyfyniad APA

Diedrich, R. C. (1972). Group procedures: purposes, processes, and outcomes: Selected readings for the counselor. Houghton Mifflin Company.

Dyfyniad Arddull Chicago

Diedrich, Richard C. Group Procedures: Purposes, Processes, and Outcomes: Selected Readings for the Counselor. Boston: Houghton Mifflin Company, 1972.

Dyfyniad MLA

Diedrich, Richard C. Group Procedures: Purposes, Processes, and Outcomes: Selected Readings for the Counselor. Houghton Mifflin Company, 1972.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.