@book{
title = {David Copperfield},
author = {Wymer, Norman},
editor = {Dickens, Charles},
editor = {Rodger, Anne},
editor = {Versione semplificata e abbreviata ad uso scolastico },
editor = {Con apparato didattico },
year = {1978},
address = {London [etc.] },
publisher = {Collins},
}