@book { ImageryinnereBilderderKonsumenten,
    title = "Imagery - innere Bilder der Konsumenten",
    subtitle = "Grundzüge und marketingpolitische Implikationen",
    author = "Alexander {Engelhardt}",
    year = "1998",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832410391",
    url = "https://m.diplom.de/document/216931"
}