@book { AusbildungundArbeitsmarkt,
    title = "Ausbildung und Arbeitsmarkt",
    author = "Heinz {König}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14059",
    url = "https://www.peterlang.com/document/1068590"
}