Emerson Jr., E., & Gervinus, G. G. (1902). A History of the Nineteenth Century: Year by year. Collier.
Lua i Stíl Chicago (17ú heag.)Emerson Jr., Edwin, agus Georg Gottfried Gervinus. A History of the Nineteenth Century: Year by Year. New York: Collier, 1902.
Lua MLA (8ú heag.)Emerson Jr., Edwin, agus Georg Gottfried Gervinus. A History of the Nineteenth Century: Year by Year. Collier, 1902.
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