WIJFJES, H. Peter Bootsma, Trouw. 75 jaar tegen de stroom in. BMGN - Low Countries Historical Review, [S. l.], v. 133, 2018. DOI: 10.18352/bmgn-lchr.10604. Disponível em: https://bmgn-lchr.nl/article/view/6844. Acesso em: 4 may. 2024.