@book { DieEntstehungdesBuchdrucks,
    title = "Die Entstehung des Buchdrucks",
    author = "Cornelia {Reinhardt}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656083719",
    url = "https://www.hausarbeiten.de/document/183721"
}