Silberman, M. (2001). The Consultant's Tool Kit: High-Impact Questionnaires, Activities, and How-to Guides for Diagnosing and Solving Client Problems. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Silberman, Mel. The Consultant's Tool Kit: High-Impact Questionnaires, Activities, and How-to Guides for Diagnosing and Solving Client Problems. New York: McGraw Hill, 2001.
Lua MLA (9ú heag.)Silberman, Mel. The Consultant's Tool Kit: High-Impact Questionnaires, Activities, and How-to Guides for Diagnosing and Solving Client Problems. McGraw Hill, 2001.
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