The Wardenburg Family in Estonian Forestry. Zeitschrift für Ostmitteleuropa-Forschung, Marburg, v. 55, n. 4, p. 556–565, 2006. DOI: 10.25627/20065548647. Disponível em: https://openjournals.osmikon.de/zfo/article/view/8647. Acesso em: 31 oct. 2026.