@book { EvaluationeinesPlanungsmodellsderPolitischenBildung,
    title = "Evaluation eines Planungsmodells der Politischen Bildung",
    author = "Jan Lukas {Delp}",
    year = "2005",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638417204",
    url = "https://www.hausarbeiten.de/document/44057"
}