Erford, B. T. (2010). 35 techniques every counselor should know. Pearson Merrill Prentice Hall.
Chicago Style (17. basım) AtıfErford, Bradley T. 35 Techniques Every Counselor Should Know. Upper Saddle River, N.J: Pearson Merrill Prentice Hall, 2010.
MLA (9th ed.) AtıfErford, Bradley T. 35 Techniques Every Counselor Should Know. Pearson Merrill Prentice Hall, 2010.
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