@book { DieEntwicklungderAgendaSettingHypotheseinderMedienwirkungsforschung,
    title = "Die Entwicklung der Agenda-Setting-Hypothese in der Medienwirkungsforschung",
    author = "Heike {Obermanns}",
    year = "2004",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640070695",
    url = "https://www.hausarbeiten.de/document/108878"
}