@book{30911,
	author = {Mufwene, Salikoko S. and ebrary, Inc.},
	title = {The ecology of language evolution},
	publisher = {Cambridge University Press,},
	year = {2001.},
	series = {Cambridge approaches to language contact},
	address = {Cambridge, UK ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10014611}
}