@book{420,
	author = {Baumol, William J. and Blinder, Alan S.},
	title = {Economics :},
	publisher = {Cengage Learning,},
	year = {[2012]},
	address = {Boston, MA, USA :},
	edition = {12th edition.},
	note = {Previously published: Mason, OH : South-Western Cengage Learning, c200.}
}