Farid A. Badria, Aicha M. Gabr, and Amal A. Galala. “Chemical and Bio-Guided Evaluation of Some Natural Resins As Potential Antitumor Agents”. World Journal of Pharmaceutical Sciences, vol. 5, no. 5, Apr. 2017, pp. 81-95, https://wjpsonline.com/index.php/wjps/article/view/chemical-evaluation-natural-resins-antitumor-agents.