Citace podle APA (7th ed.)
Tignor, R. L. (2008). Worlds together, worlds apart: A history of the world from the beginnings of humankind to the present (2nd ed.). W.W. Norton.
Citace podle Chicago (17th ed.)
Tignor, Robert L. Worlds Together, Worlds Apart: A History of the World from the Beginnings of Humankind to the Present. 2nd ed. New York: W.W. Norton, 2008.
Citace podle MLA (9th ed.)
Tignor, Robert L. Worlds Together, Worlds Apart: A History of the World from the Beginnings of Humankind to the Present. 2nd ed. W.W. Norton, 2008.
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