SIWIEC, Paweł. Roman Stopa – Pioneer of Polish African Studies .......... 15. In: KŁOSOWICZ, Robert (ed.). Pioneers of African Studies in Kraków: In memory of Professor Roman Stopa (1895-1995). Poland: Księgarnia Akademicka Publishing,2020. p. 15–23. DOI: 10.12797/9788381382359.01. Disponível em: https://books.akademicka.pl/publishing/catalog/book/86/chapter/1076. Acesso em: 19 jun. 2025.