WAL, S. van der. C. Gerretson, G. Puchinger, Verzamelde werken, I-VI, Puchinger, G., ed. BMGN - Low Countries Historical Review, [S. l.], v. 93, n. 2, p. 353–354, 1978. DOI: 10.18352/bmgn-lchr.2046. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-102217. Acesso em: 27 apr. 2024.