W. Berkelaar, L. Dorsman, P. van Hees (eds.), P. Geyl, Ik die zo weinig in mijn verleden leef. Autobiografie 1887-1940. BMGN - Low Countries Historical Review, [S. l.], v. 126, n. 2, p. 140–141, 2011. DOI: 10.18352/bmgn-lchr.7337. Disponível em: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-108338.. Acesso em: 22 dec. 2024.