Zenz, G. J. (1994). Purchasing and the management of materials (7th ed.). New York: John Wiley and Sons.
Stile di citazione ChicagoZenz, Gary Joseph. Purchasing and the Management of Materials. 7th ed. New York: John Wiley and Sons, 1994.
Citazione MLAZenz, Gary Joseph. Purchasing and the Management of Materials. 7th ed. New York: John Wiley and Sons, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.