The Other Prussia: Royal Prussia, Poland and Liberty, 1569-1772
Karin Friedrich
313, 328. 12 Anna Kaminska-Linderska, 'Lenno Lebork i Bytow na tie stosunkow polsko-brandenburskich (1657-1670)', Studia i Materialy do Dziejow Wielkopohki 6 (i960), 65-122. 13 Kaminska, Brandenburg-Prussia and Poland, pp. 9-12.