Zunidra, Zunidra, Sondang Sondang, and Supriatna Supriatna. “Tofu Liquid Waste Treatment Using Anaerob-Aerobic Biofilm Aeration System to Reduce BOD COD and Ammoniac Content”. Asian Pacific Journal of Environment and Cancer (March 16, 2025): 20250316. Accessed April 26, 2025. https://www.waocp.com/journal/index.php/apjec/article/view/804.