Bulliet, R. W. (1997). The earth and its peoples: A global history. Houghton Mifflin.
芝加哥风格引文Bulliet, Richard W. The Earth and Its Peoples: A Global History. Boston: Houghton Mifflin, 1997.
MLA引文Bulliet, Richard W. The Earth and Its Peoples: A Global History. Houghton Mifflin, 1997.
警告：这些引文格式不一定是100％准确.