@book { DieKrisederGesellschaftisteineKrisederWerte,
    title = "Die Krise der Gesellschaft ist eine Krise der Werte",
    author = "Marian {Gruber}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14662",
    url = "https://www.peterlang.com/document/1056124"
}