@book { DasSchuldbekenntnisvonPapstJohannesPaulII,
    title = "Das Schuldbekenntnis von Papst Johannes Paul II.",
    author = "Conrad {Lepa}",
    year = "2021",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/1127747"
}