@book{
title = {Boule de suif et Madamoiselle Fifi},
author = {Cohen Hemsi, Cecilia},
editor = {Maupassant, Guy  <de>},
editor = {Con apparato didattico },
editor = {Madamoiselle Fifi -  },
year = {2006},
address = {Milano},
publisher = {Paravia},
}