Haroun, M., A. Idris, and S. Omer. “Composting of Tannery Sludge with Chicken Manure and Rice Bran”. Suranaree Journal of Science and Technology, vol. 11, no. 4, Aug. 2026, pp. 300-7, https://ph04.tci-thaijo.org/index.php/SUJST/article/view/13183.