@book { EinsamkeitberwindenFreundegewinnen,
    title = "Einsamkeit überwinden - Freunde gewinnen",
    author = "Silke {Weinig}",
    year = "2022",
    publisher = "humboldt",
    address = "Hannover, Deutschland",
    url = "https://schluetersche.openpublishing.com/document/1182397"
}