@book{
title = {Economia monetaria internazionale},
author = {Krugman, Paul R.},
editor = {Helg, Rodolfo},
editor = {Melitz, Marc J.},
editor = {Obstfeld, Maurice},
editor = {998064422008896 - Economia internazionale - 2 -  },
year = {2012},
edition = {5. ed},
address = {Milano [etc.] },
publisher = {Pearson},
}