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 - C.S.M. Rademaker (BMGN: Low Countries Historical Review, 2003)