@misc{
title = {Norwegisch},
author = {Hagard Aas, Eldrid},
editor = {Tit. dal cofanetto },
editor = {Tit. del CD 1: Hör- und Sprechtraining },
editor = {Tit. del v.: Praktisches Lehrbuch },
editor = {Tit. del fasc.: Begleitheft },
editor = {Nome degli A. dal v },
year = {2009},
address = {Berlin [etc.] },
publisher = {Langenscheidt},
}