Cita APA (7a ed.)

Soremekun, O., & Onwuka, R. I. (2014). Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University.

Cita Chicago Style (17a ed.)

Soremekun, Olukayode, y R. I. Onwuka. Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University, 2014.

Cita MLA (9a ed.)

Soremekun, Olukayode, y R. I. Onwuka. Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University, 2014.