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.