Pickering, J. H. (2005). America's Switzerland: Estes Park and Rocky Mountain National Park, the growth years. University Press of Colorado.
芝加哥风格引文Pickering, James H. America's Switzerland: Estes Park and Rocky Mountain National Park, the Growth Years. Boulder: University Press of Colorado, 2005.
MLA引文Pickering, James H. America's Switzerland: Estes Park and Rocky Mountain National Park, the Growth Years. University Press of Colorado, 2005.
警告：这些引文格式不一定是100％准确.