1.
E. Gerard, De christelijke arbeidersbeweging in Belgiƫ 1891-1991, I en II. BMGN-LCHR [Internet]. 1993 Jan. 1 [cited 2024 Nov. 23];108(3):523-5. Available from: https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104309