Campbell 2006
Lyle Campbell. 2006. Areal linguistics. In Brown, Keith (ed.), Encyclopedia of language and linguistics, 454–460. Oxford: Elsevier.
@incollection{ address = {Oxford}, author = {Lyle Campbell}, booktitle = {Encyclopedia of language and linguistics}, editor = {Brown, Keith}, pages = {454–460}, publisher = {Elsevier}, title = {Areal linguistics}, year = {2006} }