APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Elshafei, W.A.M, ба A.H Abd Elrazek. On Estimating Lot Size for A Variable Lifetime Stock Items. Cairo: The Institute of National Planning, 1968.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Elshafei, W.A.M, ба A.H Abd Elrazek. On Estimating Lot Size for A Variable Lifetime Stock Items. The Institute of National Planning, 1968.