Dyfyniad APA

Institute of purchasing & supply. (1945). Procurement. Institute of purchasing and supply.

Dyfyniad Arddull Chicago

Institute of purchasing & supply. Procurement. Burmingham: Institute of purchasing and supply, 1945.

Dyfyniad MLA

Institute of purchasing & supply. Procurement. Institute of purchasing and supply, 1945.

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