@book{2011,
	author = {Mankiw, N. Gregory},
	title = {Principios de economía /},
	publisher = {McGraw Hill,},
	year = {2002.},
	address = {Madrid :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=cf0bc284d41eda70b0caeb556ea8649a}
}