@book { BiografischesLernenamBeispielvonMartinLutherKing,
    title = "Biografisches Lernen am Beispiel von Martin Luther King",
    author = "Jennifer {Broek}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656045243",
    url = "https://m.hausarbeiten.de/document/181375"
}