@book { EinarbeitunginUnternehmen,
    title = "Einarbeitung in Unternehmen",
    author = "Marthe {Geiben}",
    year = "2016",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-631-70089-1",
    url = "https://www.peterlang.com/document/1113746"
}