Ribeiro, Vasco. 2018. “The American Public Relations Firm Hired by Salazar (1951-1962) – The Debut of the Dictatorship in the Bidirectional Asymmetric Model in the Post-António Ferro Period”. Media & Jornalismo 18 (33):155-70. https://doi.org/10.14195/2183-5462_33_10.