@book{3018,
	author = {Lindgren, Bernard W. and McElrath, G.W.},
	title = {Introduction to probability and statistics /},
	publisher = {Macmillan USA,},
	year = {1978.},
	address = {[S.l.] :},
	edition = {4th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0029794307/chopaconline-20}
}