el-hefny, a. (1964). forecasting for management of seasonal goods inventories. National Planning Institute.
Chicago Style (17. basım) Atıfel-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. cairo: National Planning Institute, 1964.
MLA (9th ed.) Atıfel-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. National Planning Institute, 1964.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..