Gruenwald, K. M. (2002). River of enterprise: The commercial origins of regional identity in the Ohio Valley, 1790-1850. Indiana University Press.
Lua i Stíl Chicago (17ú heag.)Gruenwald, Kim M. River of Enterprise: The Commercial Origins of Regional Identity in the Ohio Valley, 1790-1850. Bloomington: Indiana University Press, 2002.
Lua MLA (9ú heag.)Gruenwald, Kim M. River of Enterprise: The Commercial Origins of Regional Identity in the Ohio Valley, 1790-1850. Indiana University Press, 2002.
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