@book { DieFremdenkamenaufdieErdeScienceFictionPaket, title = "Die Fremden kamen auf die Erde: Science Fiction Paket", author = "Alfred {Bekker}", year = "2021", publisher = "Uksak E-Books", address = "Lengerich, Deutschland", url = "https://uksakebooks.grin.com/document/1152551" }