@book { BndnispolitikundJulikrise1914,
    title = "Bündnispolitik und Julikrise 1914",
    author = "Oliver {Neumann}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/280674"
}