@book{59318,
	author = {Duff, Patricia, and ebrary, Inc.},
	title = {Learning Chinese},
	publisher = {De Gruyter Mouton,},
	year = {2013.},
	series = {Trends in applied linguistics,},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10677786}
}