Barton, R. (1929). God's country, a short history. A.A. Lnopf.
Lua i Stíl Chicago (17ú heag.)Barton, Ralph. God's Country, a Short History. New York: A.A. Lnopf, 1929.
Lua MLA (9ú heag.)Barton, Ralph. God's Country, a Short History. A.A. Lnopf, 1929.
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