@book{189247,
	author = {Heilbroner, Robert L. and Galbraith, James K.},
	title = {Understanding microeconomics /},
	publisher = {Prentice-Hall,},
	year = {c1987.},
	address = {Englewood Cliffs, NJ :},
	edition = {Rev. 8th ed.},
	note = {Includes index.}
}