Greely, H. (1843). The American laborer. Greeley & McElrath.
Lua i Stíl Chicago (17ú heag.)Greely, Horace. The American Laborer. New-York: Greeley & McElrath, 1843.
Lua MLA (8ú heag.)Greely, Horace. The American Laborer. Greeley & McElrath, 1843.
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