Keverling Buisman, F. “M.A.W. Gerding, Encyclopedie Van Drenthe”. BMGN - Low Countries Historical Review 119, no. 3 (January 1, 2004): 383–385. Accessed May 8, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-106978.