Sangalang, L. P. J. (1982). A product mix optimization model. Philippine Engineering Journal.
Chicagoスタイル(17版)引用形式Sangalang, Leonardo P. Jr. "A Product Mix Optimization Model." Philippine Engineering Journal 1982.
MLA(9版)引用形式Sangalang, Leonardo P. Jr. "A Product Mix Optimization Model." Philippine Engineering Journal, 1982.
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