@book{12437,
	author = {Mitchell, Andy and Environmental Systems Research Institute (Redlands, Calif.)},
	title = {The ESRI guide to GIS analysis : },
	publisher = {ESRI,},
	year = {2009.},
	address = {Redlands, Calif. :},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0716/2004400242-d.html}
}