CECI, G. M. The explosion of Italian terrorism and the Piazza Fontana massacre seen by the United States. Historia Actual Online, [S. l.], n. 31, p. 29–40, 2022. DOI: 10.36132/hao.v0i31.863. Disponível em: https://www.historia-actual.org/Publicaciones/index.php/hao/article/view/863. Acesso em: 4 jul. 2022.