Andrews, Thomas G (2002). “Turning the Tables on Assimilation: Oglala Lakotas and the Pine Ridge Day Schools 1889–1920s”. Western Historical Quarterly. 33 (4): 407–430. doi:10.2307/4144766. JSTOR4144766.
glottolog.org
Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin biên tập (2013). “Lakota”. Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
jstor.org
Andrews, Thomas G (2002). “Turning the Tables on Assimilation: Oglala Lakotas and the Pine Ridge Day Schools 1889–1920s”. Western Historical Quarterly. 33 (4): 407–430. doi:10.2307/4144766. JSTOR4144766.