@book { SelbstgesteuertesLernen,
    title = "Selbstgesteuertes Lernen",
    author = "Nadine {Klemm}",
    year = "2003",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638217187",
    url = "https://www.hausarbeiten.de/document/17037"
}