OFFRINGA, C. Plaatsbepaling in de strijd. BMGN - Low Countries Historical Review, [S. l.], v. 89, n. 1, p. 62–80, 1974. DOI: 10.18352/bmgn-lchr.1799. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-101954. Acesso em: 2 may. 2024.