@book{1900,
	author = {Spiegel, Murray R. and Stephens, Larry J.},
	title = {Schaum's Outline of Theory and Problems of Statistics /},
	publisher = {McGraw-Hill,},
	year = {c 2004.},
	address = {New York :},
	edition = {3rd ed. },
	note = {Includes index.}
}