Furnée, Jan Hein. “Charting and Shaping the Modern Consumer. The Rise of Customer Research in the Dutch Department Store De Bijenkorf, 1930-1960”. BMGN - Low Countries Historical Review 132, no. 3 (September 25, 2017): 37–69. Accessed January 19, 2022. https://bmgn-lchr.nl/article/view/6643.