Schmuck, Richardo, author
Group processes in the classroom
WM. C. Brown company publisher , 1983
 Buku Teks
Bradford, Leland P.
Making meeting work : a guide for leaders and group members
University Associates, 1976
 Buku Teks
Afra Afifah, author
Peran Support Group dalam mendorong motivasi belajar remaja : action research pada pelajar SMA X, Manggarai, Jakarta Selatan = The role of Support Group encouraging learning motivation in youth : action research on students of SMA X, Manggarai, South Jakarta
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
 UI - Skripsi (Membership)
Konopka, Gisela, author
Social group work : a helping process
Prentice-Hall, 1963
 Buku Teks
Trecker, Harleigh B., author
Social group work principles and practices
Association Press, 1967
 Buku Teks
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