@book { DrLauraLeitner6InternistinausLeidenschaft, title = "Dr. Laura Leitner #6 – Internistin aus Leidenschaft", author = "G. S. {Friebel}", year = "2018", publisher = "Uksak E-Books", address = "Lengerich, Germany", url = "https://uksakebooks.grin.com/document/453224" }