@book { DieQuellenderMachtvonAlQaida,
    title = "Die Quellen der Macht von Al Qaida",
    subtitle = "Aus der Perspektive der Theorie des Institutionalismus nach Robert Keohane",
    author = "Katharina {von Knop}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097765"
}