@book { DasBernsteinherz,
    title = "Das Bernsteinherz",
    subtitle = "–Roman: Die prachtvolle Saga für alle Fans des Bestsellers »Smaragdvogel«",
    author = "Linda {Holeman} and Monika {Köpfer}",
    year = "2022",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    url = "https://www.dotbooks.de/document/1160729"
}