@book{19673,
	author = {Krugman, Paul R. and Wells, Robin.},
	title = {Microeconomics /},
	publisher = {Worth Publishers,},
	year = {2005.},
	address = {New York :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0809/2004113015-d.html}
}