[Three Wave Migration]. (n.d.). Retrieved January 19, 2018, from http://images.slideplayer.com/19/5918856/slides/slide_33.jpg
[Beringia Migration]. (2016, January 16). Retrieved January 19, 2018, from https://rperon1017blog.wordpress.com/2016/01/16/alaskas-land-bridge-and-native-americans/
[Na-Dene distribution]. (n.d.). Retrieved January 19, 2018, from https://en.wikipedia.org/wiki/Na-Dene_languages#/media/File:Na-Dene_langs.png
[Eskimo-aleut Speakers]. (n.d.). Retrieved January 19, 2018, from https://en.wikipedia.org/wiki/Eskimo%E2%80%93Aleut_languages
[Alaskan Native Regions]. (n.d.). Retrieved January 19, 2018, from http://alumn.us/native-american-tribes-alaska-map.html