Dyfyniad APA

(1991). Accurate business forecasting. HBR Pub.

Dyfyniad Arddull Chicago

Accurate Business Forecasting. Boston: HBR Pub, 1991.

Dyfyniad MLA

Accurate Business Forecasting. HBR Pub, 1991.

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