@book { Therapie,
    title = "Therapie+",
    author = "Birgitta {Schiller} and Eva {Wimmer} and Stella {Becher-Urbaniak}",
    year = "2023",
    publisher = "facultas",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/1288945"
}