@book{51,
	author = {Puri, Basant K. and Puri, Basant K.},
	title = {SPSS in practice :},
	publisher = {Arnold,},
	year = {2002.},
	address = {London ;},
	edition = {2nd ed.},
	note = {Previous ed. published as: Statistics in practice, 1996.},
	url = {http://www.loc.gov/catdir/enhancements/fy0614/2002513161-d.html}
}