@book { ItembankgesttztesTestenbeiWissenstests,
    title = "Itembankgestütztes Testen bei Wissenstests",
    author = "Oliver {Zierke}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1103807"
}