@book{
title = {Classe quarta},
author = {},
editor = {Carbognin, Luigina},
editor = {Cristanini, Dino},
editor = {Gervasoni, Vilma},
editor = {Gini, Roberta},
editor = {998051883408896 - Guida didattica per la scuola primaria - 4 -  },
editor = {V. rilegati a spirale e ad anelli },
year = {2005},
address = {Milano},
publisher = {Fabbri},
}