@misc{9236,
  author = {Welch, Betty and West, Birdie},
  title  = {Phonemic System of Tukano. In Waterhouse, Viola G. (ed.), Phonemic systems of Columbian languages, 11-24. (Summer Institute of Linguistics Publications in Linguistics and Related Fields 14.) Norman, Oklahoma: Summer Institute of Linguistics of the University of Oklahoma.; Matteson, Esther (ed.). 1972. Comparative studies in Amerindian languages. Janua Linguarum, series practica, 127. 251 pp. The Hague: Mouton.; Waltz, Nathan A. 2002. Inovations in Wanano (Eastern Tucanoan) when compared with Piratapuyo. International Journal of American Linguistics 26. 157-215. The University of Chicago.},
  year   = {1967}
}