@book{222149,
	author = {Sgall, Petr, and ebrary, Inc.},
	title = {Variation in language},
	publisher = {J. Benjamins Pub. Co.,},
	year = {c1992.},
	series = {Linguistic & literary studies in Eastern Europe (LLSEE),},
	address = {Amsterdam ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10513316}
}