@book { QuestioningStrategiesinMarketingResearchQuestionnaires,
    title = "Questioning Strategies in Marketing Research Questionnaires",
    author = "Julia {Glimmann}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/221912"
}