@book{8893,
	author = {Norusis, Marija J},
	title = {SPSS 8.0 guide to data analysis / Marija J. Norusis},
	publisher = {Upper Saddler River, New Jersey : Prentice Hall, 1998},
	address = {Upper Saddler River, New Jersey : Prentice Hall, 1998}
}