Ramesh, Sharvin, and PROF MADYA TS. DR. NORASIKIN BINTI MAT ISA. “THE Investigation of Proximate Analysis of Coal and Coconut Shell”. Research Progress in Mechanical and Manufacturing Engineering 2, no. 2 (January 19, 2022): 1017–1022. Accessed June 26, 2022. https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/4872.