LLERENA, W. F. T.; SANTAMARÍA-FREIRE, E.; GUEVARA, M. D. G. Informal Trade as a Predominant Factor in the Local Economy of Ambato, Ecuador. Journal of Applied Business and Economics, [S. l.], v. 21, n. 5, 2019. Disponível em: https://articlearchives.co/index.php/JABE/article/view/862. Acesso em: 17 sep. 2025.