Crawford, C. M. (1994). New products management (4th ed.). Irqwin.
Chicago Style aipamenaCrawford, C. Merle. New Products Management. 4th ed. Sydney: Irqwin, 1994.
MLA aipamenaCrawford, C. Merle. New Products Management. 4th ed. Irqwin, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.