KORTHALS ALTES, W. J.A.F. Wallert, Ontwikkelingslijnen in praktijk en theorie van de wisselbrief 1300-2000. BMGN - Low Countries Historical Review, [S. l.], v. 113, n. 1, p. 77–79, 1998. DOI: 10.18352/bmgn-lchr.4621. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105317. Acesso em: 25 apr. 2024.