@book{26738,
	author = {Reys, Robert E.},
	title = {Helping children learn mathematics :},
	publisher = {J. Wiley,},
	year = {c2003.},
	address = {New York :},
	edition = {6th ed. /},
	url = {http://www.loc.gov/catdir/description/wiley037/2002282310.html}
}