Susanti, Laila, Subur Widodo, Mashuri Yusuf, and Retno Fardila Sari. “Formulation Of Ointment From Extract Combination Of Lemongrass (Cymbopogon Nardus L. Rendle), Green Betel Leaf (Piper Betle L.) And Natural Zeolite As An Antibacterial Agent”. Jurnal Biota 6, no. 2 (August 31, 2020): 92-99. Accessed October 25, 2020. http://jurnal.radenfatah.ac.id/index.php/biota/article/view/6363.