@book{48563,
	author = {Kinnear, Paul R. and Gray, Colin D.},
	title = {SPSS 12 made simple /},
	publisher = {Psychology,},
	year = {2004.},
	address = {New York :},
	url = {http://www.loc.gov/catdir/toc/ecip0418/2004012426.html}
}