Zulkarnaini, Z., G. Gumelar, and E. Zainuddin. “Anaerobic Ammonium Oxidation Performance in Shrimp Pond Wastewater Treatment”. Andalasian International Journal of Applied Science, Engineering and Technology, vol. 2, no. 2, July 2022, pp. 51 -56, doi:10.25077/aijaset.v2i1.41.