Evolución de la prensa gratuita (1990-1992). Communication & Society, [S. l.], v. 6, n. 1-2, p. 127–133, 1993. DOI: 10.15581/003.6.35549. Disponível em: https://revistas.unav.edu/index.php/communication-and-society/article/view/35549. Acesso em: 15 jul. 2025.