Okpo, S. O., and E. D. Edafiadhe. “Unlocking the Power of Waste Cooking Oils for Sustainable Energy Production and Circular Economy: A Review”. ABUAD Journal of Engineering Research and Development (AJERD), vol. 7, no. 1, Mar. 2024, pp. 41-55, doi:10.53982/ajerd.2024.0701.05-j.