Jansen John U. Costales, Edzel Keneth P. Flojo, Mike-Dane T. Salvador, and Vincent P. Pilien. “Development of a Low-Cost and Sustainable Biodiesel Reactor Using Waste Cooking Oil”. The Vector: International Journal of Emerging Science, Technology and Management (IJESTM), vol. 34, no. 1, Dec. 2025, doi:10.69566/ijestm.v34i1.332.