Dobler, D. W., & Burt, D. N. (1996). Purchasing and supply management: Text and cases (6th ed.). Tata McGraw-Hill.

Dobler, Donald W., and David N. Burt. Purchasing and Supply Management: Text and Cases. 6th ed. New Delhi: Tata McGraw-Hill, 1996.

Dobler, Donald W., and David N. Burt. Purchasing and Supply Management: Text and Cases. 6th ed. Tata McGraw-Hill, 1996.