@book{993,
	author = {Spiegel, Murray R. and Schiller, John J.},
	title = {Schaum's outlines of theory and problems of probability and statistics /},
	publisher = {Tata McGraw - Hill ;},
	year = {c2004.},
	address = {New Delhi ;},
	edition = {2nd ed.},
	note = {Includes index}
}