@book { GrundlagenderTextsortenlinguistik,
    title = "Grundlagen der Textsortenlinguistik",
    author = "Bozena {Witosz}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02652-8",
    url = "https://www.peterlang.com/document/1047500"
}