@book { HistorischeExemplainFrstenspiegelnundFrstenlehren,
    title = "Historische Exempla in Fürstenspiegeln und Fürstenlehren",
    author = "Christine {Reinle} and Harald {Winkel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1108721"
}