@book { DasliberaleBrgertumundseinUmgangmitderRevolution1918,
    title = "Das liberale Bürgertum und sein Umgang mit der Revolution 1918",
    author = "",
    year = "2006",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638537902",
    url = "https://www.hausarbeiten.de/document/60021"
}