Haspelmath, Martin. 2005a. Occurrence of nominal plurality. In WALS, 142-145.
@incollection{haspelmath2005a, author = {Haspelmath, Martin}, booktitle = {WALS}, key = {Haspelmath 2005a}, pages = {142-145}, title = {Occurrence of nominal plurality}, year = {2005a} }