T. Kurniawati, T. P. Rahayu, and N. Z. W. Kiromah, “Formulasi dan Uji Sifat Fisik Facial Wash Ekstrak Methanol Daun Salam (Eugenia polyntha) sebagai Antioksidan dengan Metode DPPH (1,1-difenil-2-pikrihidrazil): Formulation and Physical Properties Test of Facial Wash Methanol Extract of Salam Leaf (Eugenia polyntha) as Antioxidant Using DPPH Method (1,1-Diphenyl-2-Picrylhydrazil)”, J. Sains Kes., vol. 4, no. 3, pp. 243–250, Jun. 2022.