@misc{
title = {Schritte international 1/2},
author = {},
editor = {Mai, Swen},
editor = {Mergl, Isabel},
editor = {Specht, Franz},
editor = {Umpfenbach, Andreas},
editor = {Lingue: tedesco },
editor = {DVD area 2 ; PAL },
year = {2008},
address = {Ismaning },
publisher = {Hueber},
}