Achmad, Zubaidi, et al. “Mass Transfer Coefficient of Extraction of Anthocyanin from Mangosteen Peel (Garcinia Mangostana L.) With Ethanol-HCl As Solvent”. Eksergi, vol. 19, no. 3, Nov. 2022, pp. 140-7, doi:10.31315/e.v19i3.8008.