↑ a et b(en) James Stuart Olson, « Nupe », in The Peoples of Africa: An Ethnohistorical Dictionary, Greenwood Publishing Group, 1996, p. 450 (ISBN9780313279188)
(en) Saidu Ibrahim, The Nupe and their neighbours from the 14th century, Heinemann Educational Books (Nigeria), Ibadan, 1992, 151 p. (ISBN978-129-441-8)
(en) Aliyu Alhaji Idress, Domination and reaction in Nupeland, Central Nigeria : the Kyadya Revolt, 1857-1905, Edwin Mellen Press, Lewiston, NY, 1996, 65 p. (ISBN0-88946-175-9)
(en) Michael Mason, Foundations of the Bida Kingdom, Ahmadu Bello University Press, Zaria, Nigeria, 201 p. (ISBN978-125-012-7)