@book{55148,
	author = {Frank, Robert H. and Bernanke, Ben},
	title = {Principles of microeconomics /},
	publisher = {McGraw-Hill Irwin,},
	year = {c2009},
	series = {The McGraw-Hill series in economics},
	address = {Boston :},
	edition = {4th ed.},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/toc/ecip0821/2008026579.html}
}