@book{8570,
	author = {Safford, Frank Robinson,  and Palacios, Marco, },
	title = {Colombia :},
	publisher = {Oxford University Press,},
	year = {2002.},
	address = {New York :},
	url = {http://www.loc.gov/catdir/enhancements/fy0610/00058898-d.html}
}