Syaiful, Andi, Ridwan Ridwan, and Imaduddin Imaduddin. 2026. “Project-Based Learning on Making Soap from Used Cooking Oil for Muhammadiyah La’joa Middle School Students, Soppeng Regency, South Sulawesi”. Riau Journal of Empowerment 8 (1), 1-11. https://doi.org/10.31258/raje.8.1.1-11.