@book { VereinsamungundIsolationvonlterenimambulantenSetting, title = "Vereinsamung und Isolation von Älteren im ambulanten Setting", author = "Marc-Simon {Egeling}", year = "2019", publisher = "BACHELOR + MASTER PUBLISHING", address = "Hamburg, Germany", url = "https://m.bachelor-master-publishing.de/document/491887" }