Koirala, Pramod Kumar, and Shaili Pradhan. “Gold Standards in Periodontics: A Review”. Journal of Nepalese Society of Periodontology and Oral Implantology 5, no. 1 (July 1, 2021): 49–53. Accessed May 6, 2024. https://nepjol.info/index.php/jnspoi/article/view/38194.