@book { VierVerbrechenVierKrimis, title = "Vier Verbrechen: Vier Krimis", subtitle = "Cassiopeiapress Thriller", author = "Alfred {Bekker}", year = "2019", publisher = "Uksak E-Books", address = "Lengerich, Deutschland", url = "https://uksakebooks.grin.com/document/299834" }