@book{9691,
	author = {Green, Samuel B. and Salkind, Neil J.},
	title = {Using SPSS for Windows : analyzing and understanding data},
	publisher = {Prentice Hall, },
	year = {c2000},
	address = {Upper Saddle River, N.J.: },
	edition = {2nd ed},
	note = {Includes bibliographical references and index}
}