Kuswahyuning, R., and I. Lesmana. “Formulation and Evaluation of Mangosteen (Garcinia Mangostana L.) Fruit Pericarp Extract Gel”. Jurnal Kefarmasian Indonesia, Vol. 11, no. 2, Aug. 2021, pp. 90-97, doi:10.22435/jki.v11i2.3701.