@book{120461,
	author = {Lo, Burt. and International Society for Technology in Education.},
	title = {GPS and geocaching in education /},
	publisher = {International Society for Technology in Education,},
	year = {[2010]},
	address = {Eugene, Oregon :},
	edition = {First edition.},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10759763}
}