Jorge Braga de Macedo (). „Newspapers and Democracy in Portugal: The Role of Market Structure”. În Kenneth Maxwell. The Press and the Rebirth of Iberian Democracy. Westport, CT: Greenwood Press. Arhivat din original la . Accesat în .
Jorge Braga de Macedo (). „Newspapers and Democracy in Portugal: The Role of Market Structure”. În Kenneth Maxwell. The Press and the Rebirth of Iberian Democracy. Westport, CT: Greenwood Press. Arhivat din original la . Accesat în .