@book { RegelnundRitualeinderPrimarstufe,
    title = "Regeln und Rituale in der Primarstufe",
    author = "Linda {Borchers}",
    year = "2007",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638821926",
    url = "https://www.hausarbeiten.de/document/77697"
}