@book{2402,
	author = {Wonnacott, Thomas H., and Wonnacott, Ronald J.},
	title = {Introductory statistics /},
	publisher = {Wiley,},
	year = {c1990.},
	address = {New York :},
	edition = {5th ed.},
	note = {R.J. Wonnacott's name appears first on the 4th ed.},
	url = {http://www.loc.gov/catdir/description/wiley035/89032904.html}
}