@book { GustavFreytagandthePrussianGospel,
    title = "Gustav Freytag and the Prussian Gospel",
    subtitle = "Novels, Liberalism, and History",
    author = "Larry L. {Ping}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    url = "https://www.peterlang.com/document/1098826"
}