@book { KommunikationsmediumGeschftsbericht,
    title = "Kommunikationsmedium Geschäftsbericht",
    author = "Guenther {Damm}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1072303"
}