@book{14992,
	author = {Lipsey, Richard G., and Purvis, Douglas D.},
	title = {Economics /},
	publisher = {HarperCollins,},
	year = {c1991.},
	address = {New York :},
	edition = {7th Canadian ed.},
	note = {Reprint. Originally published: 7th ed. New York : Harper & Row, c1984.}
}