Elshafei, A. (1969). Analysis of A Two-Channel Queuing Model: ( A Simulation Approach ). The Institute of National Planning.
Παραπομπή σε μορφή Chicago (17η εκδ.)Elshafei, Alwalid. Analysis of A Two-Channel Queuing Model: ( A Simulation Approach ). Cairo: The Institute of National Planning, 1969.
Παραπομπή σε μορφή MLA (9th εκδ.)Elshafei, Alwalid. Analysis of A Two-Channel Queuing Model: ( A Simulation Approach ). The Institute of National Planning, 1969.