Marrs, A. W. (2009). Railroads in the Old South: Pursuing progress in a slave society. Johns Hopkins University Press.
Lua i Stíl Chicago (17ú heag.)Marrs, Aaron W. Railroads in the Old South: Pursuing Progress in a Slave Society. Baltimore: Johns Hopkins University Press, 2009.
Lua MLA (9ú heag.)Marrs, Aaron W. Railroads in the Old South: Pursuing Progress in a Slave Society. Johns Hopkins University Press, 2009.
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