Zwalve, W. J. (2023). Power and authority, a trial of two swords: A history of the Union of the Holy Roman Empire and the Kingdom of Sicily (1186-1250). Eleven.
Chicago-Zitierstil (17. Ausg.)Zwalve, Willem J. Power and Authority, a Trial of Two Swords: A History of the Union of the Holy Roman Empire and the Kingdom of Sicily (1186-1250). Den Haag: Eleven, 2023.
MLA-Zitierstil (9. Ausg.)Zwalve, Willem J. Power and Authority, a Trial of Two Swords: A History of the Union of the Holy Roman Empire and the Kingdom of Sicily (1186-1250). Eleven, 2023.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.