Zenz, G. J., & Thompson, G. (1987). Purchasing and the management of materials (6th ed.). Wiley.
Chicago Style (17th ed.) CitationZenz, Gary Joseph, and George Thompson. Purchasing and the Management of Materials. 6th ed. New York: Wiley, 1987.
MLA (9th ed.) CitationZenz, Gary Joseph, and George Thompson. Purchasing and the Management of Materials. 6th ed. Wiley, 1987.
Warning: These citations may not always be 100% accurate.