PETERSEN, Nikolaj. Barbara G. Haskel: The Scandinavian Option. Opportunities and Opportunity Costs in Postwar Scandinavian Foreign Policies. (Universitetsforlaget, Oslo, 1976). 266 s. Historie/Jyske Samlinger, [S. l.], v. 11, 1978. Disponível em: https://tidsskrift.dk/historiejyskesamling/article/view/39240. Acesso em: 6 dec. 2025.