@book{8938,
	author = {Nie, Norman H.},
	title = {SPSS: statistical package for the social sciences /},
	publisher = {McGraw-Hill, },
	year = {1975},
	address = {New York :},
	edition = {2nd ed.},
	note = {1st ed. by N. Nie, D. H. Bent, and C. H. Hull.}
}