@book { DeutschmitauslndischemAkzent,
    title = "Deutsch mit ausländischem Akzent",
    author = "Inessa {Hellwig-Fabian}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1102966"
}