Aritonang, S. C. (2021) “Optimasi Konsentrasi VCO Terhadap Stabilitas Fisik Facewash dan Uji Antibakteri Ekstrak Daun Kelapa Sawit (Eleais Guineensis Jacq.) pada Bakteri Penyebab Jerawat: Optimization of VCO Concentration on Physical Stability of Facewash and Antibacterial Test of Oil Palm Leaf Extract (Eleais Guineensis Jacq.) on Acne-causing Bacteria”, Proceeding of Mulawarman Pharmaceuticals Conferences, 14(1), pp. 288–294. doi: 10.25026/mpc.v14i1.586.