Velema, W.R.E. “P.J. Buijnsters, Justus Van Effen (1684-1735). Leven En Werk”. BMGN - Low Countries Historical Review 109, no. 3 (January 1, 1994): 475–477. Accessed April 28, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104470.