nasr el- din, y. (1970). the transportation problem on the 1620 digital computer. the institute of national planning.
芝加哥风格引文nasr el- din, yousif. The Transportation Problem on the 1620 Digital Computer. cairo: the institute of national planning, 1970.
MLA引文nasr el- din, yousif. The Transportation Problem on the 1620 Digital Computer. the institute of national planning, 1970.
警告：这些引文格式不一定是100％准确.