@book{30582,
	author = {Mankiw, N. Gregory.},
	title = {Principles of microeconomics.},
	publisher = {South-Western Cengage Learning,},
	year = {c2012.},
	address = {Mason, OH :},
	edition = {6th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1212/2010941870-d.html}
}