@book { SelbststndigmachenDerperfekteStart,
    title = "Selbstständig machen - Der perfekte Start",
    author = "Melchior {Neumann}",
    year = "2024",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1452406"
}