@book { TransnationaleMobilittinderberuflichenErstausbildung,
    title = "Transnationale Mobilität in der beruflichen Erstausbildung",
    author = "Gregor {Thurnherr}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-06012-6",
    url = "https://www.peterlang.com/document/1049800"
}