YAHYA, Diyas Aledya; PERMATASARI, Intan; MA'MUN, Sholeh. An Investigation into the Effectiveness of Green Betel (Piper betle L.) Leaf Extract Hand Sanitizer. BERKALA SAINSTEK, [S.l.], v. 11, n. 2, p. 121-128, june 2023. ISSN 2339-0069. Available at: <https://jurnal.unej.ac.id/index.php/BST/article/view/39190>. Date accessed: 08 dec. 2024. doi: https://doi.org/10.19184/bst.v11i2.39190.