@book { VirtuelleWeltenimLebensalltagvonJugendlichen,
    title = "Virtuelle Welten im Lebensalltag von Jugendlichen",
    author = "Jenny {Kuprin}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/298182"
}