@book{
title = {Sicher in Alltag und Beruf! },
author = {Perlmann-Balme, Michaela},
editor = {Orth-Chambah, Jutta},
editor = {Schwalb, Susanne},
editor = {Precede il tit.: Niveau B1+ },
year = {2018},
address = {München },
publisher = {Hueber},
}