1. Cameroon: from federal to a unitary state 1961 -1972 Limbe: Design House Nnoli, O Ethnic politics in Nigeria (1979) Enugu: Fourth Dimension Publishers Nsereko;V J Ngoh;Constitutional democracy in Africa Ibadan: Spectrum Books O'Connell, DP (1970) International law Cambridge,1963
2. Constitutional review and reform: And the adherence to democratic principles in constitutions in Southern African countries Open Society Initiative for Southern Africa Oloka-Onyango;L Olivier;Constitutionalism in Africa: Creating opportunities, facing challenges Kampala,2001
3. Better governance and public policy: Capacity building and democratic renewal in Africa Hartford;D & Olowu;Governance and democratisation in,1999
4. Ontario: Broadview Press Ltd Oyediran, O (ed) (1981) The Nigerian 1979 elections Lagos: Macmillan Nigeria Oyediran, O (1979) Nigerian government and politics under military rule;J J Oluleye;Africa,1985