Singleton, E. d. 1. (1904). The world's great events: A history of the world from ancient to modern times, B. C. 4004 to A. D. 1903. P. F. Collier & son.
Lua i Stíl Chicago (17ú heag.)Singleton, Esther d. 1930. The World's Great Events: A History of the World from Ancient to Modern Times, B. C. 4004 to A. D. 1903. New York: P. F. Collier & son, 1904.
Lua MLA (9ú heag.)Singleton, Esther d. 1930. The World's Great Events: A History of the World from Ancient to Modern Times, B. C. 4004 to A. D. 1903. P. F. Collier & son, 1904.
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