@book{4664,
	author = {Spiegel, Murray R., and Stephens, Larry J.,},
	title = {Statistics /},
	publisher = {McGraw-Hill,},
	year = {[2018]},
	series = {Schaum's outlines},
	address = {New York :},
	edition = {Sixth edition.},
	note = {Includes index.}
}