@book { Seinsdemut,
    title = "Seinsdemut",
    subtitle = "Erziehungsphilosophische Aspekte zu einer erzieherischen Grundhaltung",
    author = " {Anonym}",
    year = "1987",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1075051"
}