@book { DerSngerdesKnigsDiegroeSaga,
    title = "Der Sänger des Königs: Die große Saga",
    author = "Helga {Glaesener}",
    year = "2020",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://m.dotbooks.de/document/509555"
}