@book { Onlinepersnlichberaten,
    title = "Online persönlich beraten",
    author = "Saskia {Ehrhardt} and Melanie {Zeller}",
    year = "2023",
    publisher = "facultas",
    address = "Wien, Österreich",
    url = "https://campus-lizenzen.facultas.at/document/1395205"
}