@misc
{TN_libero_mab2,
author = {
},
title = {
English coach 21
},
publisher = {Cornelsen Software},
keywords = {
CD-ROM
,
DVD-ROM
},
year = {20XX-},
abstract = {Passend zu allen Ausgaben von English G 21},
address = {
Berlin
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}