The Legislature finds that the Lakota, Nakota, and Dakota dialects of the Sioux language are "historically" unwritten languages and are defined as such by the provisions of Public Law 94-73.
S.D. Codified Laws § 12-3-9
Sioux dialects defined as historically unwritten
Source: SL 1976, ch 104, § 2.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.