APA-Zitierstil (7. Ausg.)

Berg, R. C., & Landreth, G. L. (1990). Group counseling: Concepts and procedures (2nd ed.). Accelerated Development.

Chicago-Zitierstil (17. Ausg.)

Berg, Robert C., und Garry L. Landreth. Group Counseling: Concepts and Procedures. 2nd ed. Muncie, Ind: Accelerated Development, 1990.

MLA-Zitierstil (9. Ausg.)

Berg, Robert C., und Garry L. Landreth. Group Counseling: Concepts and Procedures. 2nd ed. Accelerated Development, 1990.