PIETRZAK-THÉBAULT, Joanna. Les perles de la Baltique. Cahiers ERTA, [S. l.], n. 2, p. 179–188, 2011. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/CE/article/view/1198. Acesso em: 10 mai. 2024.