MAKRIDAKIS, S. (1989). Forecasting Methods Management Spyros Makridakis, Steven C. Wheel. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)MAKRIDAKIS, Spyros. Forecasting Methods Management Spyros Makridakis, Steven C. Wheel. John Wiley & Sons, 1989.
Lua MLA (8ú heag.)MAKRIDAKIS, Spyros. Forecasting Methods Management Spyros Makridakis, Steven C. Wheel. John Wiley & Sons, 1989.
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