@book { Arbeitsrecht,
    title = "Arbeitsrecht",
    subtitle = "Das Arbeitsverhältnis in der betrieblichen Praxis",
    author = "Petra {Senne}",
    year = "2025",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1582199"
}