Hasballah, Kartini, et al. “Acute Toxicity and Hepatotoxicity Evaluation of Methanol Extract of Root Bark of Calotropis Gigantea in Rats”. Dhaka University Journal of Pharmaceutical Sciences, vol. 17, no. 2, Dec. 2018, pp. 243-50, doi:10.3329/dujps.v17i2.39182.