Runge, Jerzy, and Anna Runge. “The Multiculturalism of a Traditional Economic Region – the Example of the Katowice Conurbation (Poland)”. Journal of Geography, Politics and Society 13, no. 1 (March 31, 2023): 11–21. Accessed May 3, 2024. https://czasopisma.bg.ug.edu.pl/index.php/JGPS/article/view/8292.