David Kirby, The Baltic World 1772-1993. Zeitschrift für Ostmitteleuropa-Forschung, Marburg, v. 48, n. 2, p. 268–269, 1999. DOI: 10.25627/19994826922. Disponível em: https://openjournals.osmikon.de/zfo/article/view/6922. Acesso em: 31 oct. 2026.