@book { ApplicationofSearchEngineMarketingMethodsinordertogenerateHighQualityTraffic,
    title = "Application of Search Engine Marketing Methods in order to generate High-Quality Traffic",
    author = "Nina {King, geb. Schweinsberg}",
    year = "2006",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832499792",
    url = "https://m.diplom.de/document/224878"
}