Helmbrecht, Johannes. 2005. Politeness distinctions in pronouns. In WALS, 186–189.
@incollection{helmbrecht2005,
author = {Helmbrecht, Johannes},
booktitle = {WALS},
key = {Helmbrecht 2005},
pages = {186–189},
title = {Politeness distinctions in pronouns},
year = {2005}
}