@book{17864,
	author = {Shaughnessy, John J., and Zechmeister, Eugene B.,},
	title = {Research methods in psychology /},
	publisher = {McGraw-Hill,},
	year = {c2003.},
	address = {Boston :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/toc/mh031/2002022716.html}
}