Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.