Cooper, B., & Wallace, C. (2001). Group selection and the evolution of altruism. University of Oxford.
芝加哥风格引文Cooper, B., 与 C. Wallace. Group Selection and the Evolution of Altruism. University of Oxford, 2001.
MLA引文Cooper, B., 与 C. Wallace. Group Selection and the Evolution of Altruism. University of Oxford, 2001.
警告：这些引文格式不一定是100％准确.