Dyfyniad APA

WHEELWRIGHT, S., & MAKRIDAKIS, S. (1985). Forecasting methods for management.-- ed.4. John Wiley and Sons.

Dyfyniad Arddull Chicago

WHEELWRIGHT, Steven, and Spyros MAKRIDAKIS. Forecasting Methods for Management.-- Ed.4. New York: John Wiley and Sons, 1985.

Dyfyniad MLA

WHEELWRIGHT, Steven, and Spyros MAKRIDAKIS. Forecasting Methods for Management.-- Ed.4. John Wiley and Sons, 1985.

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