Study of the migratory phenomenon Ecuador-United States: implications from international politics in the period 2018-2020. Revista Universidad de Guayaquil, [S. l.], v. 134, n. 1, p. 47–66, 2022. DOI: 10.53591/rug.v134i1.1421. Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/148. Acesso em: 5 dec. 2025.