Elshafei, A. (1969). General Purpose Systems Simulator (GPSS). The Institute of National Planning.
芝加哥风格引文Elshafei, Alwalid. General Purpose Systems Simulator (GPSS). Cairo: The Institute of National Planning, 1969.
MLA引文Elshafei, Alwalid. General Purpose Systems Simulator (GPSS). The Institute of National Planning, 1969.
警告：这些引文格式不一定是100％准确.