APA aipamena

CRAWFORD, C. M. New products management sixth ed. McGrow-Hill.

Chicago Style aipamena

CRAWFORD, C. Merle. New Products Management Sixth Ed. McGrow-Hill.

MLA aipamena

CRAWFORD, C. Merle. New Products Management Sixth Ed. McGrow-Hill.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.