R. Boltendal, Koerier tussen gisteren en morgen. De geschiedenis van Je maintiendrai Friesland 1944-1984. BMGN - Low Countries Historical Review, [S. l.], v. 103, n. 2, p. 299–301, 1988. DOI: 10.18352/bmgn-lchr.2967. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103341.. Acesso em: 23 nov. 2024.