Haitsma Mulier, E.O.G. “J.L. McGee, Cornelis Corneliszoon Van Haarlem (1562-1638): Patrons, Friends and Dutch Humanists”. BMGN - Low Countries Historical Review, vol. 108, no. 3, Jan. 1993, pp. 475-6, https://doi.org/10.18352/bmgn-lchr.3726.