Style de citation APA

William L Langer. (1952). An encyclopedia of world history. Boston, Massachusetts: Houghton Mifflin.

Style de citation Chicago

William L Langer. An Encyclopedia of World History. Boston, Massachusetts: Houghton Mifflin, 1952.

Style de citation MLA

William L Langer. An Encyclopedia of World History. Boston, Massachusetts: Houghton Mifflin, 1952.

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