saehuan, choedchai, Chalisa Pinitchun, and Peeti Yimsiri. 2022. “Antibacterial Activity of Mandelic Acid Against Klebsiellae Pneumonia”. NU Journal of Nursing and Health Sciences 16 (2):55-65. https://he01.tci-thaijo.org/index.php/NurseNu/article/view/254773.