@book { NoProblemSir1, title = "No Problem, Sir! – 1", subtitle = "Indische Momente / E-Book 1", author = "Sven j. {Olsson}", year = "2017", publisher = "Bedey Media GmbH", address = "Hamburg, Deutschland", url = "https://kaderaverlag.openpublishing.com/document/380611" }