Soremekun, O., & Onwuka, R. I. (2014). Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University.
芝加哥风格引文Soremekun, Olukayode, 与 R. I. Onwuka. Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University, 2014.
MLA引文Soremekun, Olukayode, 与 R. I. Onwuka. Nigerian Petroleum Policy and External Relations. Obafemi Awolowo University, 2014.
警告：这些引文格式不一定是100％准确.