RODRÍGUEZ, Elena M. de. John Gunther. Inside South America. New York : Harper and Row, 1967. 610 p. Foro Internacional, México, Ciudad de México, v. 9, n. 2, p. 230–231, 1968. Disponível em: https://forointernacional.colmex.mx/index.php/fi/article/view/400. Acesso em: 1 jul. 2025.