G.S. Gramulla, Handelsbeziehungen Kölner Kaufleute zwischen 1500 und 1650. BMGN - Low Countries Historical Review, [S. l.], v. 89, n. 2, p. 293–295, 1974. DOI: 10.18352/bmgn-lchr.1822. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-101982.. Acesso em: 25 nov. 2024.