Dyfyniad APA
Smith, D. A. (2009). The trail of gold and silver: Mining in Colorado, 1859-2009. University Press of Colorado.
Dyfyniad Arddull Chicago
Smith, Duane A. The Trail of Gold and Silver: Mining in Colorado, 1859-2009. Boulder, Colo.: University Press of Colorado, 2009.
Dyfyniad MLA
Smith, Duane A. The Trail of Gold and Silver: Mining in Colorado, 1859-2009. University Press of Colorado, 2009.
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