@book { EntdeckendesLernenExperimenteimGeographieunterricht,
    title = "Entdeckendes Lernen - Experimente im Geographieunterricht",
    author = "Saskia {Lührig}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640285471",
    url = "https://www.hausarbeiten.de/document/123441"
}