@book { BesonderheiteninternationalerMarktforschung,
    title = "Besonderheiten internationaler Marktforschung",
    author = "Nadine {Hardt}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/272773"
}