Chang, Valeri, author
Developing helping skills: a step-by-step approach to competency
Cengage Learning, 2013
 Buku Teks
Whittaker, James K., author
Social treatment : an approach to interpersonal helping
Aldine, 1975
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Egan, Gerard, author
The skilled helper : a systematic approach to effective helping
Brooks/Cole, 1986
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Thomas, Edwin J., author
Designing intervention for helping professions
Sage, 1984
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Schroeder, David A., author
The psychology of helping and altruism: problems and puzzles
McGraw-Hill, 1995
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