KARUP PEDERSEN, Ole. Ger van Roon: Small States in Years of Depression. The Oslo Alliance 1930-1940. Van Gorcurm, Assen/Maastricht, The Netherlands. 1989. 382 s. Historisk Tidsskrift, [S. l.], v. 15, n. 1, p. 329–330, 1991. DOI: 10.7146/ht.v15i1.53365. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/53365. Acesso em: 20 mar. 2026.