@book{38354,
	author = {Field, Andy P.},
	title = {Discovering statistics using SPSS :},
	publisher = {Sage Publications,},
	year = {2005},
	series = {ISM introducing statistical methods},
	address = {London ;},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0658/2004099538-t.html}
}