@book{11055,
	author = {Wan, Ammiel Chee Hong, author; Ang-Poh, Ai Min, },
	title = {Visible thinking in mathematics: },
	publisher = {Marshall Cavendish Education,},
	year = {c2013.},
	series = {Visible thinking in mathematics series.},
	address = {Singapore :},
	edition = {2nd edition}
}