Tamura, Suzuko. 2000. "The Ainu Language." 2: Sanseido.

Swadesh, Morris. 1934. "The Phonetics of Chitimacha." In Language, 10: 345-362.

Suárez Jorge A. 1959. "The Phonemes of An Araucanian Dialect." In International Journal of American Linguistics, 25: 177-181.

Spencer, Robert. 1946. "The Phonemes of Keresan." In International Journal of American Linguistics, 12: 229-236.

Smith, Richard and Connie Smith. 1971. "Southern Barasano Phonemics." In Linguistics, 75: 80-85.

Seiler, Hansjakob. 1957. "Die Phonetischen Grundlagen Der Vokalphoneme Des Cahuilla." In Zeitschrift für Phonetik und Allgemeine Sprachwissenschaft, 10: 204-223.

Rood, David S. 1996. "Sketch of Wichita, a Caddoan Language." In Handbook of North American Indians. Volume 17: Languages, edited by Ives Goddard. 17: 580-608. Smithsonian Institute.

Riggs, Venda. 1949. "Alternate Phonemic Analyses of Comanche." In International Journal of American Linguistics, 15: 229-231.

Quesada, J. Diego. 2000. "A Grammar of Teribe." Lincom Europa.

Pierce, Joe E. 1971. "Hanis (Coos) Phonemics." In Linguistics, 75: 31-42.