APA Style

Leenders, M, R. et al (2006). Purchasing and supply management: with 50 supply chain cases (13th Edition (International Edition)). New York: McGraw-Hill/Irwin.

MLA Style

Leenders, Michiel, R.. et al. "Purchasing and supply management: with 50 supply chain cases". 13th Edition (International Edition) New York: McGraw-Hill/Irwin, 2006. Text.