JAWWAD, Muhammad Abdus Salam; MURTI, Izzati Winda; KHASANAH, Ana Mauidatul; SITOGASA, Praditya Sigit Ardisty. Handwash Soap Production by Recycling Used Cooking Oil to Empower a Boarding School in Surakarta. Nusantara Science and Technology Proceedings, Malang, Indonesia, v. 2022, n. 24, p. 326–329, 2022. DOI: 10.11594/nstp.2022.2449. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/690. Acesso em: 11 jul. 2025.