@book { EMarketingManagement,
    title = "E-Marketing-Management",
    subtitle = "Grundlagen und Prozesse für Business-to-Consumer-Märkte",
    author = "Ariane {Bagusat} and Arnold {Hermanns}",
    year = "2011",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220776"
}