BONA, Y. G. Assessing Challenges of Public Procurement in Oromia Regional State, Ethiopia. The International Journal of Business & Management, [S. l.], v. 5, n. 11, 2017. Disponível em: https://internationaljournalcorner.com/index.php/theijbm/article/view/125559. Acesso em: 22 jul. 2024.