@book { DasSmaragdCollierEinehoffnungsloseLady,
    title = "Das Smaragd-Collier - Eine hoffnungslose Lady",
    author = "Melissa {David}",
    year = "2022",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1243467"
}