OGATO, G. S. Planning for Sustainable Tourism: Challenges and Opportunities for Ecotourism Development in Addis Ababa, Ethiopia. American Journal of Human Ecology, [S. l.], v. 3, n. 2, p. 20–26, 2014. DOI: 10.11634/216796221504570. Disponível em: http://worldscholars.org/index.php/ajhe/article/view/570. Acesso em: 2 may. 2024.