ELA, M. An Assessment on the Relationship Between Informal Economy and Educational Level in Turkey. International Journal of Economics and Financial Issues, [S. l.], v. 3, n. 4, p. 910–922, 2013. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/610. Acesso em: 29 mar. 2024.