APA (7th ed.) Citation

ZENZ, G. J. (1981). Purchasing and the management of materials (5th ed.). John Wiley & Sons.

Chicago Style (17th ed.) Citation

ZENZ, Gary J. Purchasing and the Management of Materials. 5th ed. New York: John Wiley & Sons, 1981.

MLA (8th ed.) Citation

ZENZ, Gary J. Purchasing and the Management of Materials. 5th ed. John Wiley & Sons, 1981.