Bulliet, R. W. (2001). The earth and its peoples: A global history. Boston: Houghton Mifflin.
Trích dẫn kiểu ChicagoBulliet, Richard W. The Earth and Its Peoples: A Global History. Boston: Houghton Mifflin, 2001.
MLA citiranjeBulliet, Richard W. The Earth and Its Peoples: A Global History. Boston: Houghton Mifflin, 2001.
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