APA Alıntı

Harvey J Bertcher. (1994). Group participation: Techniques for leader and members (2nd.). Sage.

Chicago Stili Alıntı

Harvey J Bertcher. Group Participation: Techniques for Leader and Members. 2nd. New Delhi: Sage, 1994.

MLA Alıntı

Harvey J Bertcher. Group Participation: Techniques for Leader and Members. 2nd. Sage, 1994.