Rohyami, Y., L. A. Rahmah, and E. Iniati. “Validation Method on Green Analysis of Nitrite in Domestic Wastewater”. EKSAKTA: Journal of Sciences and Data Analysis, vol. 3, no. 1, Feb. 2022, pp. 1-9, doi:10.20885/EKSAKTA.vol3.iss1.art1.