el-hefny, a. (1964). forecasting for management of seasonal goods inventories. National Planning Institute.
Chicago (17e ed.) Bronvermeldingel-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. cairo: National Planning Institute, 1964.
MLA (9e ed.) Bronvermeldingel-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. National Planning Institute, 1964.
Let op: Deze citaties zijn niet altijd 100% accuraat.