SPAANS, J. F. van der Pol, De reformatie te Kampen in de zestiende eeuw. BMGN - Low Countries Historical Review, [S. l.], v. 108, n. 3, p. 473–475, 1993. DOI: 10.18352/bmgn-lchr.3725. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104278. Acesso em: 20 may. 2024.