@book { MoralentwicklungnachKohlbergStufenderMoralenwicklung,
    title = "Moralentwicklung nach Kohlberg. Stufen der Moralenwicklung",
    author = "Ingrid {Haase}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640464852",
    url = "https://www.hausarbeiten.de/document/137965"
}