Pradhan, Shaili. “National Gum Health Day 2020: A Day to Cherish in NSPOI History”. Journal of Nepalese Society of Periodontology and Oral Implantology 3, no. 2 (December 31, 2019): 41. Accessed May 10, 2024. https://nepjol.info/index.php/jnspoi/article/view/30879.