@book { AspektederKinderundJugendliteratur,
    title = "Aspekte der Kinder- und Jugendliteratur",
    author = "Gerhard {Haas}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01837-0",
    url = "https://www.peterlang.com/document/1053567"
}