Elshafei, A. (1969). Analysis of A Two-Channel Queuing Model: ( A Simulation Approach ). The Institute of National Planning.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Elshafei, Alwalid. Analysis of A Two-Channel Queuing Model: ( A Simulation Approach ). Cairo: The Institute of National Planning, 1969.
MLA -ийн эшлэл (9 дэх хэвлэлт)Elshafei, Alwalid. Analysis of A Two-Channel Queuing Model: ( A Simulation Approach ). The Institute of National Planning, 1969.