@book { BilderimGeschichtsunterricht,
    title = "Bilder im Geschichtsunterricht",
    author = "Stephan {Lembke}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656053576",
    url = "https://www.hausarbeiten.de/document/182100"
}