@book{14090,
	author = {Barker, Chris, and Pistrang, Nancy.},
	title = {Research methods in clinical psychology :},
	publisher = {John Wiley and Sons, Inc.,},
	year = {2016.},
	address = {Malden, MA :},
	edition = {Third edition.},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781119154082}
}