APA (7e ed.) Bronvermelding

Crawford, C. M. (1997). New products management (5th ed.). Irwin.

Chicago (17e ed.) Bronvermelding

Crawford, C. Merle. New Products Management. 5th ed. Chicago: Irwin, 1997.

MLA (8e ed.) Bronvermelding

Crawford, C. Merle. New Products Management. 5th ed. Irwin, 1997.