APA aipamena

Zenz, G. J. (1994). Purchasing and the management of materials (7th ed.). New York: John Wiley and Sons.

Chicago Style aipamena

Zenz, Gary Joseph. Purchasing and the Management of Materials. 7th ed. New York: John Wiley and Sons, 1994.

MLA aipamena

Zenz, Gary Joseph. Purchasing and the Management of Materials. 7th ed. New York: John Wiley and Sons, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.