@book{
title = {Mehrsprachigkeit fördern },
author = {},
editor = {Boeckmann, Klaus-Börge},
editor = {Lasselsberger, Anna},
editor = {Sul front.: Europäisches Fremdsprachenzentrum, EFSZ },
editor = {Pubbl. contemporaneamente anche in inglese (tit.: Promoting plurilingualism, majority language in multilingual settings) },
year = {2011},
address = {Strasbourg },
publisher = {Council of Europe},
}