@book{387,
	author = {Sobel, Russell S.; Gwartney, James D.; Stroup, Richard L.; Macpherson, David A.},
	title = {Understanding economics.},
	publisher = {South-Western CENGAGE Learning,},
	year = {2009.},
	address = {Mason,OH :},
	edition = {12th},
	note = {Includes glossary and index}
}