JOSEF VILL S. VILLANUEVA, WINSTON GOMEZ, MARILOU TOMENTOS, JEYZIEL JOY B. JABEL 2025. EMPOWERING WATER ACCESS THROUGH SUSTAINABLE ENGINEERING: A RAM PUMP SYSTEM FOR BARANGAY TUBTUBON, SIBULAN, NEGROS ORIENTAL, PHILIPPINES. TPM – Testing, Psychometrics, Methodology in Applied Psychology. 32, S6 (2025): Posted 15 September (Sep. 2025), 1515–1519.