@book{192682,
	author = {Sawyer, W. W.},
	title = {Vision in elementary mathematics},
	publisher = {Dover Publications},
	year = {2003.},
	address = {Mineola, N.Y.},
	edition = {Dover ed.},
	note = {Originally published: Harmondsworth, Middlesex, England ; Baltimore, Md. : Penguin Books, 1964, in series: Introducing mathematics ; 1.},
	url = {http://www.loc.gov/catdir/description/dover031/2002034825.html}
}