@book { IchcoachemeinUnterbewusstsein,
    title = "Ich coache mein Unterbewusstsein",
    author = "Axel {Kranz}",
    year = "2018",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/404164"
}