@book { BelegungsmanagementimAltenpflegeheimderMarketingplan,
    title = "Belegungsmanagement im Altenpflegeheim - der Marketingplan",
    author = "Corinna {Fretz}",
    year = "2010",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403656"
}