@book { ExperimentelleErschlieungderUmweltGrundschule,
    title = "Experimentelle Erschließung der Umwelt (Grundschule)",
    author = "Anne-Kathrin {Rappsilber}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656352686",
    url = "https://www.hausarbeiten.de/document/206822"
}