Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.
APA Citation Edition CitationHeeringen, R. M. v. (1998). The construction of Frankish circular fortresses in the province of Zeeland (SW Netherlands) in the end of the ninth century. Centre de Recherche Archéologique Médiévales.
Chicago Citation Edition CitationHeeringen, Robert M. van. The Construction of Frankish Circular Fortresses in the Province of Zeeland (SW Netherlands) in the End of the Ninth Century. Caen: Centre de Recherche Archéologique Médiévales, 1998.
MLA Citation Edition CitationHeeringen, Robert M. van. The Construction of Frankish Circular Fortresses in the Province of Zeeland (SW Netherlands) in the End of the Ninth Century. Centre de Recherche Archéologique Médiévales, 1998.