Ferguson, Charles A. 1966. Assumptions about Nasals: a Sample Study in Phonological Universals. In Greenberg, Joseph H. (ed.), Universals of Language, 53-60. Cambridge, MA: MIT Press. (2nd edition.)
@incollection{Ferguson-1966, address = {Cambridge, MA}, author = {Ferguson, Charles A.}, booktitle = {Universals of Language}, editor = {Greenberg, Joseph H.}, note = {2nd edition.}, pages = {53-60}, publisher = {MIT Press}, title = {Assumptions about Nasals: a Sample Study in Phonological Universals}, year = {1966} }