@book{6990,
	author = {Frank, Robert H. and Bernanke, Ben.},
	title = {Principles of Micro-Economics /},
	publisher = {McGraw-Hill Irwin,},
	year = {c2009.},
	series = {The McGraw-Hill series in economics},
	address = {Boston :},
	edition = {Brief ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/ecip0824/2008032347.html}
}