Martins, Manuel Gonçalves. “Portugal E Os Poderes Políticos Europeus (1143-1974): Portugal and the European Political Powers (1143-1974)”. Perspectivas - Journal of Political Science 1 (May 1, 2005): 81–92. Accessed November 23, 2024. https://www.perspectivasjournal.com/index.php/perspectivas/article/view/416.