Gaya APA

Makridakis, S., Wheelwright, S, C. (1989). Forecasting methods for management (Ed. 5). New York: Jhon Willey&Sons.

Gaya MLA

Makridakis, Spyros., Wheelwright, Steven, C. "Forecasting methods for management". Ed. 5 New York: Jhon Willey&Sons, 1989. Text.