Elmina castle Ghana [online], www.ghana.photographers-resource.com [dostęp 2023-04-08], Cytat: "By the 18th century, 30,000 slaves on their way to North and South America passed through Elmina's Door of No Return each year.".
UNESCO World HeritageU.W.H.CentreUNESCO World HeritageU.W.H., Forts and Castles, Volta, Greater Accra, Central and Western Regions [online], UNESCO World Heritage Centre [dostęp 2023-04-08], Cytat: "They can be seen as a unique “collective historical monument”: a monument not only to the evils of the slave trade, but also to nearly four centuries of pre-colonial Afro-European commerce on the basis of equality rather than on that of the colonial basis of inequality."(ang.).
