Zahrim, A. Y., A. R. Rakmi, and M. S. Kalil. “Sludge Composting: A Case Study on Palm Oil Mill Sludge (POms)”. ASEAN Journal of Chemical Engineering 7, no. 2 (December 31, 2007): 102-107. Accessed November 6, 2024. https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7682.