Intachan, P., and W. Chokdeesumrit. “Comparison of the effectiveness of topical 5% Centella Asiatica gel versus topical 1% clindamycin gel in the treatment of acne vulgaris”. Journal of Medicine and Health Sciences, vol. 27, no. 1, Apr. 2020, pp. 1-11, https://he01.tci-thaijo.org/index.php/jmhs/article/view/241798.