@book {9783864965418, title = "Online-Werbung für Einsteiger", isbn = "9783864965418", edition = "1", url = "http://www.content-select.com/index.php?id=bib_view&ean=9783864965418", url = "https://content-select.com/de/portal/media/view/5404466c-d198-43e1-8136-2859b0dd2d03", publisher = "UVK Verlagsgesellschaft", }