RICO FERRAT, Carlos M. Kari Levitt. Silent surrender : the American economic empire in Canada. Nueva York : Liverigh, 1971. 185 p. Foro Internacional, México, Ciudad de México, v. 14, n. 2, p. 249–254, 1973. Disponível em: https://forointernacional.colmex.mx/index.php/fi/article/view/606. Acesso em: 4 jun. 2025.