Ezera, K. (1964). Constitutional developments in Nigeria: An analytical study of Nigeria's constitution-making developments and the historical and political factors that affected constitutional change (2nd ed.). University Press.

Ezera, Kalu. Constitutional Developments in Nigeria: An Analytical Study of Nigeria's Constitution-making Developments and the Historical and Political Factors That Affected Constitutional Change. 2nd ed. Cambridge: University Press, 1964.

Ezera, Kalu. Constitutional Developments in Nigeria: An Analytical Study of Nigeria's Constitution-making Developments and the Historical and Political Factors That Affected Constitutional Change. 2nd ed. University Press, 1964.