@book { SchreibenundSprechenvonHrfunknachrichten,
    title = "Schreiben und Sprechen von Hörfunknachrichten",
    author = "Norbert {Gutenberg}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099031"
}