Sahroni, I., L. I. Ardhayanti, C. Basumerda, M. M. Musawwa, and R. . Ramadani. “Project-Based Learning: Chemistry Students’ Role in Fostering the Society in Recycling the Waste Cooking Oil”. IJCER (International Journal of Chemistry Education Research), vol. 6, no. 2, Oct. 2022, pp. 69-74, doi:10.20885/ijcer.vol6.iss2.art2.