Tiwari, S. B., S. D. Singh, A. K. Verma, D. Awasthi, and A. K. Rastogi. “History of Ayurvedic System of Medicines: From Prehistoric to Present”. Journal of Drug Delivery and Therapeutics, Vol. 11, no. 1-s, Feb. 2021, pp. 212-4, doi:10.22270/jddt.v11i1-s.4689.