WOLFFRAM, D.J. J.P. Zwemer, Zeeland 1950-1965. BMGN - Low Countries Historical Review, [S. l.], v. 122, n. 2, p. 310–312, 2007. DOI: 10.18352/bmgn-lchr.6587. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-107536.. Acesso em: 21 nov. 2024.