Ribeiro, V. “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, vol. 18, no. 33, Nov. 2018, pp. 155-70, doi:10.14195/2183-5462_33_10.