Khanal, Lekha Nath, Yuba Raj Pokharel, Khagaraj Sharma, and Surya Kanta Kalauni. 2020. “Plant-Derived Secondary Metabolites As Potential Mediators Against COVID-19: A Review”. Prithvi Academic Journal 3 (1):1-18. https://doi.org/10.3126/paj.v3i1.31282.