Roberts, M. J. (2007). New business ventures and the entrepreneur (6th ed.). Boston, Mass.: McGraw-Hill.
Παραπομπή Chicago StyleRoberts, Michael J. New Business Ventures and the Entrepreneur. 6th ed. Boston, Mass.: McGraw-Hill, 2007.
Παραπομπή MLARoberts, Michael J. New Business Ventures and the Entrepreneur. 6th ed. Boston, Mass.: McGraw-Hill, 2007.
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