@book{10585,
	author = {Samuelson, Paul. and Nordhaus, William.},
	title = {Economics /},
	publisher = {McGraw-Hill/Irwin,},
	year = {2009.},
	address = {[S.l.] :},
	edition = {19th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0073511293/chopaconline-20}
}