Jones, G.I. "The Niger Cross-River Hinterlands and their Masks." in: West African Masks and Cultural Systems. Tervuren, Belgique: Musée royal de l'Afrique centrale, 1988.

Jones, G.I. "The Niger Cross-River Hinterlands and their Masks." in: West African Masks and Cultural Systems. Tervuren, Belgique: Musée royal de l'Afrique centrale, 1988.