Sorge, F. A. (1874). 192c: Susan M Day, History of the International, New Haven, George Richmond, 259 p.
Lua i Stíl Chicago (17ú heag.)Sorge, Friedrich Adolph. 192c: Susan M Day, History of the International, New Haven, George Richmond, 259 P. 1874.
Lua MLA (8ú heag.)Sorge, Friedrich Adolph. 192c: Susan M Day, History of the International, New Haven, George Richmond, 259 P. 1874.
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