Marina Costa Lobo; Pedro C. Magalhães (2004). "The Portuguese Socialists and the Third Way". Giuliano Bonoli; Martin Powell (Ed.). Social Democratic Party Policies in Contemporary Europe (1.1url=https://www.google.com/books?id=sW6CAgAAQBAJ&pg=PA83 bas.). Londra: Routledge. ss. 83-101. ISBN0415304253.