@book { MenschenrechteinSchulbchern,
    title = "Menschenrechte in Schulbüchern",
    subtitle = "Eine produktorientierte Analyse",
    author = "Volker {Druba}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1101054"
}