Dyfyniad APA

Leenders, M. R. (2002). Purchasing and supply management (12th ed.). McGraw Hill.

Dyfyniad Arddull Chicago

Leenders, Michiel R. Purchasing and Supply Management. 12th ed. New York: McGraw Hill, 2002.

Dyfyniad MLA

Leenders, Michiel R. Purchasing and Supply Management. 12th ed. McGraw Hill, 2002.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.