@book { MoralentwicklungnachPiagetundKohlberg,
    title = "Moralentwicklung nach Piaget und Kohlberg",
    author = "Karsten {Grause}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638022750",
    url = "https://www.hausarbeiten.de/document/87590"
}