Ogato, Gemechu Shale. “Planning for Sustainable Tourism: Challenges and Opportunities for Ecotourism Development in Addis Ababa, Ethiopia”. American Journal of Human Ecology 3, no. 2 (October 14, 2014): 20–26. Accessed May 2, 2024. http://worldscholars.org/index.php/ajhe/article/view/570.