Thiphong, Jiranan, Rapeepong Suphanchaimat, and Hathairat Kosiyaphon. “Data Visualization in R Program”. Journal of Health Science of Thailand 33, no. 6 (December 31, 2024): 973–974. Accessed February 23, 2025. https://thaidj.org/index.php/JHS/article/view/16176.