@book { IntegrativeAnstzezurMarkenbewertung,
    title = "Integrative Ansätze zur Markenbewertung",
    author = "Manuela {Künzel}",
    year = "2005",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832489052",
    url = "https://m.diplom.de/document/224080"
}