Thammasom ฐ., and Wongpriaw น. “AN EXPERIMENT UTILIZING ROSELLE FOR ASSESSING GROUNDWATER QUALITY IN AN ENVIRONMENTAL CHEMISTRY CONTEXT FOR GENERAL CHEMISTRY 2 STUDENTS AT LOEI RAJABHAT UNIVERSITY”. Integrated Social Science Journal, vol. 4, no. 11, Aug. 2024, pp. 91-100, https://ojs.mbuslc.ac.th/index.php/issj/article/view/275.