@book { MehrsprachigkeitinfrherKindheit,
    title = "Mehrsprachigkeit in früher Kindheit",
    author = "Irina {Young}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656445333",
    url = "https://www.hausarbeiten.de/document/229457"
}