@book { TheorienderKommunikation,
    title = "Theorien der Kommunikation",
    author = "J. {Wolf}",
    year = "2002",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638131711",
    url = "https://www.hausarbeiten.de/document/5197"
}