Dummy Referensi
^ "Kentucky State Symbols". Kentucky Department for Libraries and Archives. Diarsipkan dari versi asli tanggal 2007-07-31. Diakses tanggal 2006-11-29.
^ "Annual Estimates of the Resident Population for the United States, Regions, States, and Puerto Rico: April 1, 2010 to July 1, 2011" (CSV). 2011 Population Estimates. Biro Sensus Amerika Serikat, Divisi Populasi. December 2011. Diakses tanggal December 21, 2011.
^ a b "Elevations and Distances in the United States". United States Geological Survey. 2001. Diakses tanggal October 21, 2011.
^ a b Ketinggian disesuaikan dengan North American Vertical Datum of 1988.
^ "Annual Estimates of the Resident Population for the United States, Regions, States, and Puerto Rico: April 1, 2010 to July 1, 2011" (CSV). 2011 Population Estimates. Biro Sensus Amerika Serikat, Divisi Populasi. December 2011. Diakses tanggal December 21, 2011.
^ a b "Elevations and Distances in the United States". United States Geological Survey. 2001. Diakses tanggal October 21, 2011.
^ a b Ketinggian disesuaikan dengan North American Vertical Datum of 1988.
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