Besag, Frank P.
Statistics for the helping professions
Sage, 1985
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Thomas, Edwin J.
Designing intervention for helping professions
Sage, 1984
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Egan, Gerard
The skilled helper : a problem-management and opportunity-development approach to helping
Brooks, 2014
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Hawkins, Peter
Supervision in the helping professions: an individual, group and organizational approach
Open University Press, 2005
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Social work research : methods for the helping professions
edited by Norman A. Polansky
University of Chicago Press, 1975
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