Nasution, A., and R. Indriani. “Determination of Lead (Pb) in Patin Fish Oil (Pangasius Hypophthalmus) Using Atomic Absorption Spectrophotometry (AAS)”. JPK : Jurnal Proteksi Kesehatan, Vol. 10, no. 1, May 2021, pp. 1-5, doi:10.36929/jpk.v10i1.314.