@book { PolitischesDenkenist,
    title = "Politisches Denken ist",
    author = "Susann {Bräcklein} and Jürgen {Meyer} and Henning {Scherf}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099715"
}