@book { QualittsmanagementinderbetrieblichenBildung,
    title = "Qualitätsmanagement in der betrieblichen Bildung",
    author = "Lieselotte {Cramer}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832437190",
    url = "https://m.diplom.de/document/219404"
}