@book { DieProfessionalisierungderPflegeinDeutschland,
    title = "Die Professionalisierung der Pflege in Deutschland",
    author = "Klaus {Reiners} and Andreas {Pomplun}",
    year = "2004",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638321662",
    url = "https://www.hausarbeiten.de/document/31053"
}