@book{7208,
	author = {Bowling, Ann.},
	title = {Research methods in health :},
	publisher = {Open University Press,},
	year = {2014.},
	address = {Maidenhead :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/toc/mh051/2001045769.html}
}