Rujukan Bandar Raya Oklahoma

  1. ↑ Knapp, Adam. Stockyards City district at About.com (Retrieved April 29, 2010)
  2. ↑ "Tornadoes Which Have Occurred in the Oklahoma City, Oklahoma Area Since 1890". National Weather Service Norman Oklahoma. Dicapai pada December 8, 2015.
  3. ↑ Wilson, Linda D. "Oklahoma City Diarkibkan Mac 18, 2011, di WebCite," Encyclopedia of Oklahoma History and Culture Diarkibkan Februari 1, 2015, di Wayback Machine. Retrieved January 26, 2010.
  4. ↑ "Archived copy". Diarkibkan daripada yang asal pada Februari 21, 2014. Dicapai pada Januari 29, 2014. Unknown parameter |deadurl= ignored (bantuan)CS1 maint: archived copy as title (link)
  5. ↑ Wilson. Encyclopedia of Oklahoma History and Culture Diarkibkan Februari 1, 2015, di Wayback Machine
  6. ↑ "About Oklahoma City". okc.gov. Diarkibkan daripada yang asal pada Februari 23, 2016. Dicapai pada Februari 25, 2016. Unknown parameter |deadurl= ignored (bantuan)
  7. ↑ "Climatological averages and records" NWS Norman, Oklahoma. Retrieved August 22, 2012.
  8. ↑ http://sister-cities.org/interactive-map/Oklahoma%20City,%20Oklahoma Diarkibkan April 13, 2015, di Wayback Machine Sister Cities International (Oklahoma City)
  9. ↑ "Sister Cities Haikou-Oklahoma City" (PDF). sister-cities.org.
  10. ↑ P.C., Net. "Gdynia – International Gdynia – International co-operation of Gdynia". www.gdynia.pl. Diarkibkan daripada yang asal pada October 19, 2016. Unknown parameter |deadurl= ignored (bantuan)