@book{
title = {Das Model},
author = {Blobel, Brigitte},
editor = {Felter, Iris},
editor = {Schmidt, Palle},
editor = {Versione ridotta e semplificata ad uso scolastico },
editor = {Con breve apparato didattico },
year = {2002},
address = {Kopenhagen },
publisher = {Easy Readers},
}