el-hefny, a. (1964). forecasting for management of seasonal goods inventories. National Planning Institute.
Chicago-referens (17:e uppl.)el-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. cairo: National Planning Institute, 1964.
MLA-referens (9:e uppl.)el-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. National Planning Institute, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.