@book { MehrsprachigkeitalsChance,
    title = "Mehrsprachigkeit als Chance",
    author = "Stéfanie {Witzigmann} and Jutta {Rymarczyk}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04389-1",
    url = "https://www.peterlang.com/document/1048544"
}