Cohen, M. R. (1961). The meaning of human history (2nd.ed.). Open Court.
芝加哥风格引文Cohen, Morris R. The Meaning of Human History. 2nd.ed. Illinois: Open Court, 1961.
MLA引文Cohen, Morris R. The Meaning of Human History. 2nd.ed. Open Court, 1961.
警告：这些引文格式不一定是100％准确.