H. S. Winata, H. Faisal, M. Andry, S. Naziyah, and M. A. Nasution, “Test of the total content of polyphenols in kandis acid fruit (Garcinia xanthochymus Hook.f.ex T.Anderson) using spectrophotometry method UV-VIS and LCMS”, JPS, vol. 6, no. 5-si, pp. 159–167, Dec. 2023.