RIVAS, Carolina. Impact of Covid 19 on Ecuadorian tour guides. Ecuadorian Science Journal, [S. l.], v. 4, n. 2, p. 1–6, 2020. DOI: 10.46480/esj.4.2.67. Disponível em: https://journals.gdeon.org/index.php/esj/article/view/67.. Acesso em: 13 sep. 2025.