Key Harold, Key Mary. Bolivian Indian tribes: Classification, bibliography and map of present language distribution

Summer Institute of Linguistics of the University of Oklahoma, 1967. — 130 p. — (Summer Institute of Linguistics Publications in Linguistics and Related Fields 15).Introduction
Presentation and classification
Abbreviations
General and mixed citations
Guaranian
Macro-guaycuruan
Mojoan (south arawakan)
Ponoan (southeast)
Tacanan
Unclassified