@book{42949,
	author = {Wonnacott, Paul. and n},
	title = {An introduction to macroeconomics /},
	publisher = {Richars D. Irwin,},
	year = {c1974, [1984]},
	series = {Irwin publications in economics},
	address = {Homewood :},
	edition = {3rd ed.}
}