@book{117481,
	author = {Rugg, Gordon. and Petre, Marian, and ebrary, Inc.},
	title = {A gentle guide to research methods},
	publisher = {Open University Press,},
	year = {2007.},
	address = {Maidenhead :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10197031}
}