Gaya APA

Howard, H, S, M, J, R, H, I, G. (1989). New Business Ventures and The Entrepreneur (ed.3). Baston: Irwin.

Gaya MLA

Howard, H., Stevenson,, Michael, J., Roberts,, H., Irving, Grousbeck. "New Business Ventures and The Entrepreneur". ed.3 Baston: Irwin, 1989. Text.