Garba, Abdurrahman, A. Tahir, and Abdulazeez Kankia Yusuf. 2021. “Adsorption of Methylene Blue Using Activated Carbon Made from Watermelon Rinds”. Journal of Sustainable Materials Processing and Management 1 (1): 38-43. https://penerbit.uthm.edu.my/ojs/index.php/jsmpm/article/view/9955.