Osha, S. (2014). The social contract in Africa. Africa Institute of South Africa.
芝加哥风格引文Osha, Sanya. The Social Contract in Africa. Pretoria, South Africa: Africa Institute of South Africa, 2014.
MLA引文Osha, Sanya. The Social Contract in Africa. Africa Institute of South Africa, 2014.
警告:这些引文格式不一定是100%准确.