@book { PsychosozialeOnlineBeratung,
    title = "Psychosoziale Online-Beratung",
    author = "Vera {Zuehlke}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/268871"
}