Gaya APA

Wheelwright, S, C. (1980). Forecasting methods for management, 3rd Ed. (1980). : Canada : John Wiley & Sons, Inc.,.

Gaya MLA

Wheelwright, Steven, C. "Forecasting methods for management, 3rd Ed.". 1980 : Canada : John Wiley & Sons, Inc.,, 1980. Text.