WOUDE, A.M. van der. Th.L.M. Engelen, Fertiliteit, arbeid, mentaliteit. De vruchtbaarheidsdaling in Nederlands-Limburg 1850-1960. BMGN - Low Countries Historical Review, [S. l.], v. 106, n. 3, p. 498–501, 1991. DOI: 10.18352/bmgn-lchr.3429. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103904.. Acesso em: 17 aug. 2024.