@book { SprachlernberatungSprachlerncoaching,
    title = "Sprachlernberatung – Sprachlerncoaching",
    author = "Annette {Berndt} and Ruth-Ulrike {Deutschmann}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04084-5",
    url = "https://www.peterlang.com/document/1048001"
}