(1999). New business ventures and the entrepreneur. Boston: Irwin/McGraw-Hill.
Chicago Style aipamenaNew Business Ventures and the Entrepreneur. Boston: Irwin/McGraw-Hill, 1999.
MLA aipamenaNew Business Ventures and the Entrepreneur. Boston: Irwin/McGraw-Hill, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.