@book { KompetenzentwicklungzumnachhaltigenWirtschaften,
    title = "Kompetenzentwicklung zum nachhaltigen Wirtschaften",
    author = "Christian {Michaelis}",
    year = "2017",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b10896",
    url = "https://www.peterlang.com/document/1113160"
}