@book { Fachtextsortengesternundheute,
    title = "Fachtextsorten – gestern und heute",
    author = "Irmhild {Barz} and Ulla {Fix}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104767"
}