@book{2884,
	author = {Gravetter, Frederick J. and Forzano, Lori-Ann B.},
	title = {Research methods for the behavioral sciences /},
	publisher = {Wadsworth,},
	year = {c2003.},
	address = {Belmont, CA :},
	url = {http://www.loc.gov/catdir/enhancements/fy1515/2002109839-b.html}
}