Cita APA (7th ed.)

Elshafei, W., & Abd Elrazek, A. (1968). On Estimating Lot Size for A Variable Lifetime Stock Items. The Institute of National Planning.

Cita Chicago (17th ed.)

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.

Cita MLA (9th ed.)

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.