Dyfyniad APA

Makridakis, S. G., & Wheelwright, S. C. (1989). Forecasting methods for management (5th ed.). Wiley.

Dyfyniad Arddull Chicago

Makridakis, Spyros G., and Steven C. Wheelwright. Forecasting Methods for Management. 5th ed. New York: Wiley, 1989.

Dyfyniad MLA

Makridakis, Spyros G., and Steven C. Wheelwright. Forecasting Methods for Management. 5th ed. Wiley, 1989.

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