^(in English) Kellog, Day Otis, and Smith, William Robertson, "The Encyclopædia Britannica: latest edition. A dictionary of arts, sciences and general literature", Volume 25, p 664, Werner (1902)
^ ab(in French) Laurent-Jean-Baptiste Bérenger-Féraud, "Les peuplades de la Sénégambie: histoire, ethnographie, mœurs et coutumes, légendes, etc", E. Leroux (1879), p 276-7
^ ab(in English)Frazer, James George "Folk-Lore In The old Testament. Studies In Comparative Religion Legend and Law", Published by Forgotten Books, pp 317-8, 1918, ISBN1440070156[2]