@book{12833,
	author = {Cozby, Paul C.},
	title = {Methods in behavioral research /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2009.},
	address = {Boston :},
	edition = {10th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0826/2008037022.html}
}