@book { FunktionundGestaltderBibliothek,
    title = "Funktion und Gestalt der Bibliothek",
    author = "Gerhard {Liebers}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091237"
}