@book { TauscheSchwestergegenGummibrchen, title = "Tausche Schwester gegen Gummibärchen", subtitle = "Sternstunden einer glücklichen Familie", author = "Gisela {Walitzek}", year = "2016", publisher = "Bedey Media GmbH", address = "Hamburg, Deutschland", url = "https://kaderaverlag.openpublishing.com/document/317945" }