@book { AusbildungzumBeruf,
    title = "Ausbildung zum Beruf",
    author = "Matthias {Becker} and Lars {Balzer} and Marlise {Kammermann} and Georg {Spöttl}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06625-8",
    url = "https://www.peterlang.com/document/1050238"
}