@book { HoppelsSchatzsuchemitdemWal,
    title = "Hoppels Schatzsuche mit dem Wal",
    author = "Cassie {Beaufort}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1377028"
}