PIOTROWSKI, Bernard. Sweden and the question of Poland’s independence (1914–1918). Folia Scandinavica Posnaniensia, [S. l.], v. 1, p. 11–33, 2007. Disponível em: https://pressto.amu.edu.pl/index.php/fsp/article/view/11107. Acesso em: 29 mar. 2024.