@book{4020,
	author = {Maestro, Betsy and Maestro, Giulio.},
	title = {The discovery of the Americas /},
	publisher = {HarperCollins,},
	year = {1991},
	address = {New York :},
	url = {http://www.loc.gov/catdir/enhancements/fy1311/89032375-b.html}
}