Elshafei, W., & Abd Elrazek, A. (1968). On Estimating Lot Size for A Variable Lifetime Stock Items. The Institute of National Planning.
Cytowanie według stylu Chicago (wyd. 17)Elshafei, W.A.M, i A.H Abd Elrazek. On Estimating Lot Size for A Variable Lifetime Stock Items. Cairo: The Institute of National Planning, 1968.
Cytowanie według stylu MLA (wyd. 9)Elshafei, W.A.M, i A.H Abd Elrazek. On Estimating Lot Size for A Variable Lifetime Stock Items. The Institute of National Planning, 1968.