Pacheco, E. S. (1983). Six semesters of PSI: A evaluation. Philippine Engineering Journal.
Chicago Style (17th ed.) CitationPacheco, Edgardo S. "Six Semesters of PSI: A Evaluation." Philippine Engineering Journal 1983.
MLA (9th ed.) CitationPacheco, Edgardo S. "Six Semesters of PSI: A Evaluation." Philippine Engineering Journal, 1983.
Warning: These citations may not always be 100% accurate.