Schutte, G.J. “J. Van Gelderen, C. Houtman, Profiel. Theologiebeoefening in Kampen 1970-1990”. BMGN - Low Countries Historical Review 122, no. 4 (January 1, 2007). Accessed March 28, 2024. https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107713.