el-hefny, a. (1964). forecasting for management of seasonal goods inventories. National Planning Institute.
Citazione stile Chigago Style (17a edizione)el-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. cairo: National Planning Institute, 1964.
Citatione MLA (9a ed.)el-hefny, amina. Forecasting for Management of Seasonal Goods Inventories. National Planning Institute, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.