@book{888,
	author = {Mendenhall, William and Scheaffer, Richard L., },
	title = {Mathematical statistics with applications /},
	publisher = {Duxbury Press, },
	year = {c1973},
	address = {North Scituate, MA :},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/899.pdf}
}