@book { UNundNGOs,
    title = "UN und NGO's",
    subtitle = "Der Einfluß von Non-Governmental Organizations (NGO's) auf die Politik der Vereinten Nationen (UN)",
    author = "Klaus {Uyak}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/221097"
}