@book{12087,
	author = {Valk, Laurens.},
	title = {The LEGO Mindstorms NXT 2.0 discovery book : a beginner's guide to building and programming robots},
	publisher = {No Starch Press,},
	year = {c2010.},
	address = {San Francisco :},
	url = {http://catdir.loc.gov/catdir/enhancements/fy1008/2010011157-b.html}
}