@book { EinfhrungindieHypnotherapie,
    title = "Einführung in die Hypnotherapie",
    author = "Björn {Riegel}",
    year = "2010",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640517121",
    url = "https://www.hausarbeiten.de/document/143353"
}