Ian Maddieson and Kristin Precoda. 1990. Updating UPSID. 74. Department of Linguistics, UCLA. 104–111pp.
@misc{MaddiesonPrecoda1990, author = {Ian Maddieson and Kristin Precoda}, booktitle = {UCLA Working Papers in Phonetics}, pages = {104–111}, publisher = {Department of Linguistics, UCLA}, title = {Updating UPSID}, volume = {74}, year = {1990} }