Cita APA (7th ed.)

Quiwa, E. P. (1982). LPL: A problem oriented language for linear programming. Philippine Engineering Journal.

Cita Chicago (17th ed.)

Quiwa, Evangel P. "LPL: A Problem Oriented Language for Linear Programming." Philippine Engineering Journal 1982.

Cita MLA (9th ed.)

Quiwa, Evangel P. "LPL: A Problem Oriented Language for Linear Programming." Philippine Engineering Journal, 1982.