Weiss, A. (2016). Million Dollar Consulting: The Professional's Guide to Growing a Practice (5th rv ed.). McGraw Hill Education.
Lua i Stíl Chicago (17ú heag.)Weiss, Alan. Million Dollar Consulting: The Professional's Guide to Growing a Practice. 5th rv ed. New York: McGraw Hill Education, 2016.
Lua MLA (9ú heag.)Weiss, Alan. Million Dollar Consulting: The Professional's Guide to Growing a Practice. 5th rv ed. McGraw Hill Education, 2016.
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