@book{
title = {Der Bär schreibt heute Briefe},
author = {Donaldson, Julia},
editor = {Scheffler, Axel},
editor = {Stohner, Anu},
editor = {V. cartonato con alette apribili },
editor = {Età: dai 0 ai 5 anni },
year = {2017},
address = {Weinheim [etc.] },
publisher = {Beltz & Gelberg},
}