Wojciech Kozłowski, The Thirteenth-century Inter-Lordy System. Lordy Identity and the Origins of the Angevin-Piast Dynastic Alliance, Solivagus–Verlag, Kiel 2020, ss. 439
Wojciech Kozłowski, The Thirteenth-century Inter-Lordy System. Lordy Identity and the Origins of the Angevin-Piast Dynastic Alliance, Solivagus-Verlag, Kiel 2020.