@book { BeobachtungslernenLernenamModell,
    title = "Beobachtungslernen / Lernen am Modell",
    author = "Carsten {Gusé}",
    year = "2001",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638984461",
    url = "https://www.hausarbeiten.de/document/100014"
}