KALLEK, C. Economic Views of Abu Ubayd. International Journal of Economics, Management and Accounting, [S. l.], v. 6, n. 1, 2013. DOI: 10.31436/ijema.v6i1.37. Disponível em: https://journals.iium.edu.my/enmjournal/index.php/enmj/article/view/37. Acesso em: 1 jul. 2024.