@book { RisikenvonSocialMediaundUserGeneratedContent,
    title = "Risiken von Social Media und User Generated Content",
    author = "Sonja {Geiring}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b11125",
    url = "https://www.peterlang.com/document/1068731"
}