Borman, M. B. 1962. Cofan Phonemes. In Elson, Benjamin F. (ed.), Studies in Ecuadorian Indian languages 1, 45–59. Norman: Summer Institute of Linguistics of the University of Oklahoma.
@incollection{borman1962, address = {Norman}, author = {Borman, M. B.}, booktitle = {Studies in Ecuadorian Indian languages 1}, editor = {Elson, Benjamin F.}, pages = {45–59}, publisher = {Summer Institute of Linguistics of the University of Oklahoma}, series = {Linguistic Series}, title = {Cofan Phonemes}, volume = {7}, year = {1962} }