Ostropolska-Kubik, Eliza. “Connections Between the Swahili Civilization and the East African Interior”. Studies and Work of the Collegium of Management and Finance , no. 198 (September 11, 2024): 157–164. Accessed December 5, 2025. https://econjournals.sgh.waw.pl/SiP/article/view/4621.