Maddieson, Ian. 2005c. Presence of uncommon consonants. In WALS, 82-85.
@incollection{maddieson2005c, author = {Maddieson, Ian}, booktitle = {WALS}, key = {Maddieson 2005c}, pages = {82-85}, title = {Presence of uncommon consonants}, year = {2005c} }