Cita APA (7th ed.)
Leenders, M. R., & Fearon, H. E. (1993). Purchasing and materials management (10th ed.). IRWIN.
Cita Chicago (17th ed.)
Leenders, Michiel R., i Harold E. Fearon. Purchasing and Materials Management. 10th ed. Chicago: IRWIN, 1993.
Cita MLA (9th ed.)
Leenders, Michiel R., i Harold E. Fearon. Purchasing and Materials Management. 10th ed. IRWIN, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.