APA aipamena

Sangalang, L. P. J. (1982). A product mix optimization model. Philippine Engineering Journal.

Chicago Style aipamena

Sangalang, Leonardo P. Jr. "A Product Mix Optimization Model." Philippine Engineering Journal 1982.

MLA aipamena

Sangalang, Leonardo P. Jr. "A Product Mix Optimization Model." Philippine Engineering Journal, 1982.