Bulliet, R. W. (1997). The earth and its peoples: A global history. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Bulliet, Richard W. The Earth and Its Peoples: A Global History. Boston: Houghton Mifflin, 1997.
Lua MLA (9ú heag.)Bulliet, Richard W. The Earth and Its Peoples: A Global History. Houghton Mifflin, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.