R. M. Matadling Jr., P. F. Pingol, and M. J. M. Villar, “Strategic Analysis of Productivity and Operations of Free Medical Oxygen Services of the City Government of Cabanatuan”, IJRESM, vol. 9, no. 4, pp. 59–62, Apr. 2026, doi: 10.65138/ijresm.v9i4.3436.