@book { KlimaundHydrogeographieNordamerikas,
    title = "Klima und Hydrogeographie Nordamerikas",
    author = "Benedikt {Breitenbach}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640826933",
    url = "https://www.hausarbeiten.de/document/166528"
}