@book { DerneueBegleitbandzumGemeinsameneuropischenReferenzrahmenfrSprachen,
    title = "Der neue Begleitband zum Gemeinsamen europäischen Referenzrahmen für Sprachen",
    author = "Karin {Vogt} and Jürgen {Quetz}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18077",
    url = "https://www.peterlang.com/document/1058238"
}