@book { LaFranceunemonarchieprsidentielle,
    title = "La France : une monarchie présidentielle?",
    author = "Ingeborg {Friedl}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640782673",
    url = "https://www.hausarbeiten.de/document/162721"
}