Ivory & slaves in East Central Africa: changing patterns of international trade to the later nineteenth century - Alpers, Edward A. (Heinemann, 1975)
Keywords: Esclavage – Zanzibar

Britain and slavery in East Africa - Nwulia, Moses D.E. (Three Continents Press, 1975)
Keywords: Esclavage – Zanzibar

Tippu Tip and the East African Slave Trade - Farrant, Leda (Hamish Hamilton, 1975)
Keywords: Esclavage – Zanzibar; Tippo Tip (1837-1905)