Armin, Fithriani, et al. “Development and Validation Of Thin Layer Chromatograpy-Densitometry Method for Determinationa and Quantification of Sinthetic Red Coloring Agent in Sauce Sambel Sachet”. Jurnal Sains Farmasi & Klinis, vol. 2, no. 1, Dec. 2015, pp. 60-65, doi:10.29208/jsfk.2015.2.1.43.