“E. Nijhof, ’Gezien De Dreigende Onrust in De haven. ’. De Ontwikkeling Van De Arbeidsverhoudingen in De Rotterdamse Haven 1945-1965”. BMGN - Low Countries Historical Review 105, no. 1 (January 1, 1990): 133–134. Accessed November 23, 2024. https://ojstest.minions.amsterdam/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103639.