Arhami, M. Nizar Machmud, and Masri Ali. “Limbah Tempurung Kelapa Diuji Guna Menjadi Bahan Bakar Alternatif”. Journal of Engineering and Science 1, no. 1 (March 7, 2022): 9–19. Accessed August 28, 2026. https://www.journal.kawanad.com/index.php/jes/article/view/2.