@book{51267,
	author = {Bordens, Kenneth S. and Abbott, Bruce B.},
	title = {Research design and methods :},
	publisher = {McGraw-Hill,},
	year = {c2008},
	address = {Boston :},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0717/2007019314.html}
}