Dryer, Matthew S. 2005c. Indefinite articles. In WALS, 158-161.
@incollection{dryer2005c,
author = {Dryer, Matthew S},
booktitle = {WALS},
key = {Dryer 2005c},
pages = {158-161},
title = {Indefinite articles},
year = {2005c}
}