Singh, Santosh Kumar, et al. “Physicochemical, Qualitative and Quantitative Determination of Secondary Metabolites and Antioxidant Potential of Kalanchoe Pinnata (Lam.) Pers. Leaf Extracts”. Journal of Drug Delivery and Therapeutics, vol. 9, no. 1, Jan. 2019, pp. 220-4, https://doi.org/10.22270/jddt.v9i1.2225.