@book { QualittsindikatoreninstationrenPflegeeinrichtungen,
    title = "QualitätsindikatoreninstationärenPflegeeinrichtungen",
    author = "Yvonne {Cyron}",
    year = "2007",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836604611",
    url = "https://m.diplom.de/document/225338"
}