Gloria parendi : dagboeken van Friesland, Groningen en Drenthe, 1643-1654 /

by Willem Frederik, Graaf van Nassau-Dietz, 1613-1664
Amsterdam : Nederlands Historisch Genootschap, 1995

Princely power in the Dutch Republic : patronage and William Frederick of Nassau (1613-64) /

by Janssen, Geert H.
Manchester, UK ; New York : New York : Manchester University Press ; Distributed exclusively in the USA by Palgrave Macmillan, 2008