Hasballah, K., M. ., E. ., and A. . “CYTOTOXIC BIOACTIVE COMPOUNDS FROM CALOTROPIS GIGANTEA STEM BARK”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 8, no. 9, Sept. 2016, pp. 111-5, doi:10.22159/ijpps.2016.v8i9.12430.