@book { NeutralittundKriegseintrittderUSA,
    title = "Neutralität und Kriegseintritt der USA",
    author = "Christian {Albers}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640308224",
    url = "https://www.hausarbeiten.de/document/125130"
}