APA (7th ed.) Citation

Leenders, M. R., England, W. B., & Fearon, H. E. (1980). Purchasing and materials management (7th ed.). Richard D. Irwin.

Chicago Style (17th ed.) Citation

Leenders, Michiel R., Wilbur B. England, and Harold E. Fearon. Purchasing and Materials Management. 7th ed. Homewood, Ill: Richard D. Irwin, 1980.

MLA (9th ed.) Citation

Leenders, Michiel R., et al. Purchasing and Materials Management. 7th ed. Richard D. Irwin, 1980.