Cappon C. G. Verhoeven, J.A. Mol, H. Bremer, Friese testamenten tot 1550. BMGN-LCHR [Internet]. 1996 Jan. 1 [cited 2024 Nov. 23];111(2):229-30. Available from: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104868