@book{
title = {Lehr- und Arbeitsbuch für fremdsprachige Erwachsene},
author = {Büchler-Dreszing, Susanne},
editor = {Helbling-Loher, Gabriela},
editor = {Willi-Widrig, Patrizia},
editor = {998084315708896 - Vorstufe Deutsch 1 - 1 -  },
editor = {Rilegato a spirale },
year = {2008},
edition = {4. Aufl},
address = {Widnau },
publisher = {Büchler},
}