@book{16746,
	author = {Nie, Norman H.},
	title = {SPSS: statistical package for the social sciences},
	publisher = {McGraw-Hill},
	year = {[1975]},
	address = {New York,},
	edition = {2d ed.},
	note = {1st ed. by N. Nie, D. H. Bent, and C. H. Hull.}
}