Żukowski, A. . Roman Stopa’s Research in Light of African Studies in Poland and Worldwide – Initial Considerations . 25. In Pioneers of African Studies in Kraków: In memory of Professor Roman Stopa (1895-1995); Kłosowicz, R., Ed.; Stępień, M. ., Translator; Księgarnia Akademicka Publishing: Poland, 2020; pp. 25-69. https://doi.org/10.12797/9788381382359.02.