@book { RittergeschichtenfrdieKleinsten,
    title = "Rittergeschichten für die Klein(st)en",
    subtitle = "Die Welt des Mittelalters im aktuellen deutschsprachigen Kinderbuch",
    author = "Ylva {Schwinghammer}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136101"
}