Awol, A. “Phytochemical Screening, Proximate and Mineral Composition of Sweet Potato Leaves Grown in Tepi Provision, South- West of Ethiopia”. Journal of Science, Technology and Arts Research, vol. 3, no. 3, Sept. 2014, pp. 112-5, https://journals.wgu.edu.et/index.php/star/article/view/522.