@book { SofunktioniertdieLegoSeriousPlayMethodeonline,
    title = "So funktioniert die Lego® Serious Play®-Methode online",
    author = "Sean {Blair} and Jens {Dröge} and Jens {Dröge}",
    year = "2021",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221394"
}