@book { DerBuchdruckJohannGutenbergs,
    title = "Der Buchdruck Johann Gutenbergs",
    author = "Katharina {Bucklitsch}",
    year = "2009",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640390137",
    url = "https://www.hausarbeiten.de/document/130598"
}