Spyros, M. et al.(1983).Forecasting : metods and applications / Spyros Makridakis, Steven C. Wheelwright, Victor E. McGee (Ed.ke-2).New York:John Wiley n Sons.
Gaya MLA
Makridakis, Spyros. et al."Forecasting : metods and applications / Spyros Makridakis, Steven C. Wheelwright, Victor E. McGee".Ed.ke-2New York:John Wiley n Sons,1983.Textbook.