Suntikunaporn, Malee, Snunkheam Echaroj, and Warangkana Rimpikul. “Evaluation of Agricultural Wastes for Biogas Production”. Science & Technology Asia 19, no. 1 (March 19, 2014): 1–8. accessed April 5, 2025. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/17054.