Siwiec, Paweł. “Roman Stopa – Pioneer of Polish African Studies . 15”. In Pioneers of African Studies in Kraków: In Memory of Professor Roman Stopa (1895-1995), edited byRobert Kłosowicz, translated byMiłosława Stępień, 15–23. Poland: Księgarnia Akademicka Publishing, 2020. Accessed June 19, 2025. https://books.akademicka.pl/publishing/catalog/book/86/chapter/1076.