Baron, Robert A.
Understanding human relations : a practical guide to people at work
Allyn and Bacon, 1991
 Buku Teks SO
The 1977 [one thousand nine hundred seventy-seven} annual handbook for group facilitators: the sixth annual / John. E. Jones and J. William Pfeiffer
John. E. Jones and J. William Pfeiffer
University Associates, 1977
 Buku Teks SO
The 1979 annual handbook for group facilitators: the eighth annual / John. E. Jones and J. William Pfeiffer
University Associates, 1979
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Group techniques / Gerald Corey ...[et al.].
by Gerald Corey ... [and others]
Brooks/Cole, 1982
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Sensitivity training and the laboratory approach: readings about concepts and applications
F.E. Paecock Publishers, Inc., 1973
 Buku Teks SO