@book { EndlichAzubi,
    title = "Endlich Azubi",
    author = "Matthias {Schwarze} and Matthias {Schwarze} and Matthias {Schwarze}",
    year = "2022",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1308550"
}