VONGDETH, K, L PHONGPHANE, A CHANDAVONGS, S KEOINPAENG, and P MOXOM. “The Production of Hand Sanitizing Gel With Herbal Extracts”. Scientific Journal of National University of Laos 22 (May 21, 2024). Accessed December 26, 2024. https://lajd.org/index.php/sjnuol/article/view/150.