@book { DasDesignyourFuturePlaybook,
    title = "Das Design your Future Playbook",
    author = "Michael {Lewrick} and Jean-Paul {Thommen} and Achim {Schmidt}",
    year = "2019",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221334"
}