@book{121641,
	author = {Siemund, Peter, and ebrary, Inc.},
	title = {Linguistic universals and language variation},
	publisher = {De Gruyter Mouton,},
	year = {2011.},
	series = {Trends in linguistics. Studies and monographs,},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10485476}
}