Dyfyniad APA

(1975). Inter-Firm comparison an incentive to productivity. Paris: OEEC.

Dyfyniad Arddull Chicago

Inter-Firm Comparison an Incentive to Productivity. Paris: OEEC, 1975.

Dyfyniad MLA

Inter-Firm Comparison an Incentive to Productivity. Paris: OEEC, 1975.

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