Hidayatullah, M., M. Yuwono, and R. . Primaharinastiti. “Optimization Method and Stability Test to Determinate Luteolin, Quercetin, Apigenin, and Sinensetin Levels in Herbal Medicines Using TLC-Densitometry”. JURNAL FARMASI DAN ILMU KEFARMASIAN INDONESIA, vol. 9, no. 3, Dec. 2022, pp. 235-41, doi:10.20473/jfiki.v9i32022.235-241.