@book { PauseninderMusikMusik4Klasse,
    title = "Pausen in der Musik (Musik, 4. Klasse)",
    author = "Gesine {Ueberfeldt}",
    year = "2015",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/308385"
}