Southwestern Oklahoma (English Wikipedia)

Cameron University. "Academic Information". Archived from the original on May 27, 2010. Retrieved October 6, 2013.
Cameron University. "CU Fast Facts". Retrieved October 6, 2013.

cnc.cc.ok.us

"Refuge History". U.S. fish and Wildlife Service. USFWS. 2006. p. 1. Archived from the original (web) on 2007-02-03. Retrieved 2007-03-15.

"Oklahoma's Climate: an Overview" (pdf). University of Oklahoma. Retrieved October 6, 2013.

"Missouri and the Nation". University of Missouri. 2007-02-09. Archived from the original on October 12, 2007. Retrieved October 7, 2013.

Rodger Edwards, Storm Prediction Center. "Tornado Climatology". Retrieved October 6, 2013.

National Weather Service - Norman. "Comanche County, OK Tornadoes (1875–2009)". Retrieved October 6, 2013.

Southwestern Oklahoma State University | Best College | US News. Colleges.usnews.rankingsandreviews.com. (accessed October 6, 2013)

"Superintendent Garrett announces Oklahoma No. 1 in Pre-Kindergarten". Oklahoma State Department of Education. 2004-11-19. Archived from the original on June 29, 2007. Retrieved October 7, 2013.

"Counties & Regions". Oklahoma Tourism and Recreation Department (Travel Promotion Division). Retrieved February 5, 2019.

Heisch, John D., "Old Greer County," Encyclopedia of Oklahoma History and Culture Archived 2010-05-31 at the Wayback Machine (accessed June 17, 2010).
Reggio, Michael H., "Cheyenne-Arapaho Land Opening Archived 2015-01-19 at the Wayback Machine," Encyclopedia of Oklahoma History and Culture Archived 2010-05-31 at the Wayback Machine (accessed June 17, 2010).
"Refuge History". U.S. fish and Wildlife Service. USFWS. 2006. p. 1. Archived from the original (web) on 2007-02-03. Retrieved 2007-03-15.
"Superintendent Garrett announces Oklahoma No. 1 in Pre-Kindergarten". Oklahoma State Department of Education. 2004-11-19. Archived from the original on June 29, 2007. Retrieved October 7, 2013.
"Missouri and the Nation". University of Missouri. 2007-02-09. Archived from the original on October 12, 2007. Retrieved October 7, 2013.
Cameron University. "Academic Information". Archived from the original on May 27, 2010. Retrieved October 6, 2013.