Lalu Ardian Hadi, Rizqa Fersiyana Deccati, Handa Muliasari, and Nisa Isneni Hanifa, “Determination of total flavonoid content in the ethanol extract of Renggak fruit (Amomum dealbatum roxb.) using uv–vis spectrophotometry”, Acta.Chim.Asiana, vol. 9, no. 1, pp. 867–873, May 2026.