Kosasih, Kosasih, Dita Lismawati, & Rifael Satrio Adinugroho. " Optimization of hand sanitizer gels containing soursop (Annona muricata L.) leaf extract using Simplex Lattice Design method." JURNAL ILMU KEFARMASIAN INDONESIA [Online], 23.1 (2025): 67-82. Web. 4 May. 2025