omar, a. (1986). on the transportation problem with mixed constraints. the institute of national planning.
芝加哥风格引文omar, amani. On the Transportation Problem with Mixed Constraints. cairo: the institute of national planning, 1986.
MLA引文omar, amani. On the Transportation Problem with Mixed Constraints. the institute of national planning, 1986.
警告：这些引文格式不一定是100％准确.