APA (7th ed.) Zitazioa
Stevenson, H. H., & Roberts, M. J. (1989). New business ventures and the entrepreneur (3rd .ed.). Irwin.
Chicago Style (17th ed.) Zitazioa
Stevenson, Howard H., eta Michael J. Roberts. New Business Ventures and the Entrepreneur. 3rd .ed. Boston: Irwin, 1989.
MLA (9th ed.) Zitazioa
Stevenson, Howard H., eta Michael J. Roberts. New Business Ventures and the Entrepreneur. 3rd .ed. Irwin, 1989.
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