Machol, R. E. 1. (1976). Elemenatry systems mathematics: Linear programming for business and the social science. McGraw-Hill.
Chicago-viite (17. p.)Machol, Robert Engle 1917. Elemenatry Systems Mathematics: Linear Programming for Business and the Social Science. New York: McGraw-Hill, 1976.
MLA-viite (9. p.)Machol, Robert Engle 1917. Elemenatry Systems Mathematics: Linear Programming for Business and the Social Science. McGraw-Hill, 1976.
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