@book { UnterrichtsplanungzuFriedrichSchillersWilhelmTell,
    title = "Unterrichtsplanung zu Friedrich Schillers Wilhelm Tell",
    author = "Nadine {Bachmann}",
    year = "2006",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638517041",
    url = "https://www.hausarbeiten.de/document/57186"
}