@book{2231,
	author = {Mood, Alexander McFarlane, and Graybill, Franklin A.,},
	title = {Introduction to the theory of statistics / },
	publisher = {McGraw-Hill,},
	year = {c1974.},
	series = {McGraw-Hill series in probability and statistics},
	address = {New York :},
	edition = {3rd ed.}
}