Hassan, R. A., W. A.-M. Tawfik, and L. M. Abou-Setta. “ AND THEIR BIOLOGICAL ACTIVITY”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 11, no. 1, Oct. 2013, pp. 67-72, https://athmsi.org/journals/index.php/ajtcam/article/view/1828.