@book { BeratungundSupervision,
    title = "Beratung und Supervision",
    subtitle = "Fragen, Themen und Effekte",
    author = "Jutta {Brünker}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099233"
}