@book { EinSoldatunterdemMistelzweig,
    title = "Ein Soldat unter dem Mistelzweig",
    author = "Tharah {Meester}",
    year = "2022",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1312889"
}