Fourth survey of citizen opinion of institutions, authorities and local aspects of the urban area of Canton Ambato. Boletín de Coyuntura, [S. l.], n. 11, p. 10–15, 2016. Disponível em: https://revistas.uta.edu.ec/index.php/bcoyu/article/view/619. Acesso em: 8 dec. 2025.