@book{55,
	author = {Green, Samuel B., and Salkind, Neil J.},
	title = {Using SPSS for Windows and Macintosh :},
	publisher = {Pearson/Prentice Hall,},
	year = {2008.},
	address = {Upper Saddle River, N.J. :},
	edition = {5th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0718/2007020611.html}
}