Chiamogu, A. P., V. C. Onwughalu, and U. P. Chiamogu. “Politics of Inter-Governmental Relations in Nigeria: An Appraisal of Current Issues”. International Journal of Asian Social Science, vol. 2, no. 11, Nov. 2012, pp. 1892-05, https://archive.aessweb.com/index.php/5007/article/view/2358.