Wrigley, W. D. „Overseas Migration from East-Central and Southeastern Europe, 1880-1940“. Südost-Forschungen, Bd. 1, Nr. 1, November 2021, S. 331-4, http://bsb0sit-zepweb01.bsb.lrz.de/portal/index.php/sof/article/view/8231.