@book { BulimianervosaundderenTherapie,
    title = "Bulimia nervosa und deren Therapie",
    author = "",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638056175",
    url = "https://www.hausarbeiten.de/document/91308"
}