HINEW, D. History of Oromo Social Organization: Gadaa Grades Based Roles and Responsibilities. Journal of Science, Technology and Arts Research, [S. l.], v. 1, n. 3, p. 97–105, 2012. Disponível em: https://journals.wgu.edu.et/index.php/star/article/view/35. Acesso em: 23 sep. 2024.