@book { DasGrannyAuPairExperiment,
    title = "Das Granny-Au-Pair Experiment",
    author = "Sigrun {Peller}",
    year = "2023",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1359188"
}