Angelo R. Ocon, Loyd Christian P Gania, Mark John R. Guevarra, Marvin L. Agustin, Roniel L. Abrigo, Ronnie S. Sundiam, Junelynne U. Samson, Edgardo M. Santos, and Freneil Pampo. “An Assessment of Photovoltaic System Installed at a Manufacturing Plant in Pampanga”. International Journal of Progressive Research in Science and Engineering, vol. 3, no. 08, Aug. 2022, pp. 62-67, https://journal.ijprse.com/index.php/ijprse/article/view/686.