Tohutoro APA (7th ed.)
Ehrlich, W. (2002). The twentieth century. University of Missouri Press.
Tohutoru Kātū Chicago (17th ed.)
Ehrlich, Walter. The Twentieth Century. Columbia: University of Missouri Press, 2002.
Tohutoro MLA (9th ed.)
Ehrlich, Walter. The Twentieth Century. University of Missouri Press, 2002.
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