Were, J, M Mujunga, A Simons, L Dawson, and S Ruigu. “Reproductive Biology of the Endangered Medicinal”. East African Agricultural and Forestry Journal 67, no. 1&2 (September 8, 2008). Accessed August 14, 2022. https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/68.