Maddieson, Ian and Precoda, Kristin. 1990. Updating UPSID. In UCLA Working Papers in Phonetics, 104–111. Department of Linguistics, UCLA.
@incollection{maddiesonprecoda1990, author = {Maddieson, Ian and Precoda, Kristin}, booktitle = {UCLA Working Papers in Phonetics}, pages = {104–111}, publisher = {Department of Linguistics, UCLA}, title = {Updating UPSID}, volume = {74}, year = {1990} }