APA (7th ed.) Citation

Zenz, G. J. (1987). Purchasing and the management of materials (6. ed.). Wiley.

Chicago Style (17th ed.) Citation

Zenz, Gary J. Purchasing and the Management of Materials. 6. ed. New York u.a: Wiley, 1987.

MLA (9th ed.) Citation

Zenz, Gary J. Purchasing and the Management of Materials. 6. ed. Wiley, 1987.