I Gusti Ayu Ari Agung, Sri Wahjuni, Dewa Made Wedagama, I Wayan Weta, and Anak Agung Wiradewi Lestari. “Nutraceuticals of Nano-Betel (Piper Betle L.) Leaves: Prevent COVID-19 and Oral Cavity Disease”. Bali Medical Journal 11, no. 2 (August 15, 2022): 844–849. Accessed April 22, 2024. https://balimedicaljournal.ejournals.ca/index.php/bmj/article/view/3476.