Liongson, L. Q. Linear programming cases in the water resources engineering classroom: Formulation and implementation with the linear programming language (LPL)package. Philippine Engineering Journal.
Cita Chicago (17th ed.)Liongson, Leonardo Q. "Linear Programming Cases in the Water Resources Engineering Classroom: Formulation and Implementation with the Linear Programming Language (LPL)package." Philippine Engineering Journal .
Cita MLA (9th ed.)Liongson, Leonardo Q. "Linear Programming Cases in the Water Resources Engineering Classroom: Formulation and Implementation with the Linear Programming Language (LPL)package." Philippine Engineering Journal, .
Atenció: Aquestes cites poden no estar 100% correctes.