@book{204305,
	author = {Reys, Robert E.},
	title = {Helping children learn mathematics},
	publisher = {John Wiley & Sons},
	year = {c2007.},
	address = {Hoboken, NJ},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0626/2005056825-d.html}
}