@book{4917,
	author = {Getis, Arthur, and Getis, Judith,},
	title = {Introduction to geography /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2004.},
	address = {Boston :},
	edition = {9th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/description/mh031/2002012637.html}
}