1. Onwuejeogwu M. A. , ‘The political organization of Nri, southeastern Nigeria’, M.Phil, thesis (London University, 1974), 166.
2. Lawal , J. Afr. Hist., 6.
3. Lawal , Odu, 80.
4. Ghana Social Science Journal loc. cit. p. 6.
5. Radiocarbon dates and reality;Ralph;Masca Newsletter,1973