@book { CoachingeineFragederTheorie,
    title = "Coaching – eine Frage der Theorie?",
    author = "Stefanie {Godemann}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b10783",
    url = "https://www.peterlang.com/document/1109992"
}