Informal commercial transactions: zone 8, “Bahía” zone, Colon and Pichincha streets. Revista Universidad de Guayaquil, [S. l.], v. 119, n. 1, p. 69–76, 2015. DOI: 10.53591/rug.v119i1.1048 . Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/427. Acesso em: 5 dec. 2025.