“C.M. Ridderikhoff, H.J.M. Nellen, Briefwisseling Van Hugo Grotius, XVI, Oktober 1644-Augustus 1645; C.M. Ridderikhoff, H.J.M. Nellen, Briefwisseling Van Hugo Grotius, XVII, Supplement 1583-1645”. 2003. BMGN - Low Countries Historical Review 118 (1): 97-99. https://doi.org/10.18352/bmgn-lchr.5801.