Esto, W. (1991). A Goal programming model formulation: Printing job selection : De Paul Printing Press. UP College of Engineering.
Citace podle Chicago (17th ed.)Esto, Wilberto. A Goal Programming Model Formulation: Printing Job Selection : De Paul Printing Press. Quezon City: UP College of Engineering, 1991.
Citace podle MLA (9th ed.)Esto, Wilberto. A Goal Programming Model Formulation: Printing Job Selection : De Paul Printing Press. UP College of Engineering, 1991.
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