Khanal, Lekha Nath, Yuba Raj Pokharel, Khagaraj Sharma, and Surya Kanta Kalauni. “Plant-Derived Secondary Metabolites As Potential Mediators Against COVID-19: A Review”. Prithvi Academic Journal 3, no. 1 (September 16, 2020): 1–18. Accessed April 26, 2024. https://www.nepjol.info/index.php/paj/article/view/31282.