@book{288905,
	author = {Wagner, William E.},
	title = {Using IBM SPSS statistics for research methods and social science statistics /},
	publisher = {Sage,},
	year = {2015.},
	address = {Los Angeles :},
	edition = {5th edition.},
	note = {Revision of the author's Using SPSS for social statistics and research methods.}
}