Leighty, Dr. Robert D. (2001). "Blue Ridge Physiographic Province". Contract Report. Defense Advanced Research Projects Agency (DOD) Information Sciences Office. Archived from the original on May 21, 2008. Retrieved December 29, 2007.
Medina, M.A.; J.C. Reid; R.H. Carpenter (2004). "Physiography of North Carolina"(PDF). North Carolina Geological Survey, Division of Land Resources. Archived(PDF) from the original on December 16, 2007. Retrieved December 29, 2007.
usgs.gov
geonames.usgs.gov
"Blue Ridge". U.S. Geological Survey. Archived from the original on December 24, 2019. Retrieved December 19, 2018.
Leighty, Dr. Robert D. (2001). "Blue Ridge Physiographic Province". Contract Report. Defense Advanced Research Projects Agency (DOD) Information Sciences Office. Archived from the original on May 21, 2008. Retrieved December 29, 2007.
Medina, M.A.; J.C. Reid; R.H. Carpenter (2004). "Physiography of North Carolina"(PDF). North Carolina Geological Survey, Division of Land Resources. Archived(PDF) from the original on December 16, 2007. Retrieved December 29, 2007.