Lee Lamar & Dobler Donald W. (1977). Purchasing and materials management: Text and cases (3rd ed.). Tata McGraw Hill publishing co. ltd.
Dyfyniad Arddull ChicagoLee Lamar and Dobler Donald W. Purchasing and Materials Management: Text and Cases. 3rd ed. New delhi: Tata McGraw Hill publishing co. ltd, 1977.
Dyfyniad MLALee Lamar and Dobler Donald W. Purchasing and Materials Management: Text and Cases. 3rd ed. Tata McGraw Hill publishing co. ltd, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.