References
- Official Site of the Navajo Nation. History. Available online at: navajo-nsn.gov/history.htm. Last accessed May 5, 2019.
- Chaco P. Roads and transportation on the Navajo Nation. Available online at: obamawhitehouse.archives.gov/blog/2012/02/15/roads-and-transportation-navajo-nation. Last accessed May 5, 2019.