@book { DasGeschichtslehrbuchinderKritik,
    title = "Das Geschichtslehrbuch in der Kritik",
    author = "Sebastian  {Gärtner}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656055198",
    url = "https://www.hausarbeiten.de/document/181813"
}