@book { KatharinaLedermacherlkrieginKolumbien,
    title = "Katharina Ledermacher: Ölkrieg in Kolumbien",
    author = "Bernd {Teuber}",
    year = "2020",
    publisher = "Uksak E-Books",
    address = "Lengerich, Germany",
    url = "https://uksakebooks.grin.com/document/520518"
}