Arthur John Newman Tremearne: Hausa Superstitions and Customs. An Introduction to the Folk-Lore and Folk. (West African Nights’ Entertainment Series, Bd. 1) John Bale, Sohns & Daniellson, London 1913, S. 124f (bei Internet Archive)
Arthur John Newman Tremearne: The ban of the Bori. Demons and demon-dancing in West and North Africa. Heath, Cranton & Ouseley, London 1914 (bei Internet Archive)