Soremekun, O., & Onwuka, R. I. (2014). Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University.
Chicago-čujuhus (17. p.)Soremekun, Olukayode, juo R. I. Onwuka. Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University, 2014.
MLA-čujuhus (9. p.)Soremekun, Olukayode, juo R. I. Onwuka. Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University, 2014.
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