Berkley Publishing Group. Worlds ahead: The Berkley science fiction newsletter. Berkley Publishing.
Chicago Style (17th ed.) CitationBerkley Publishing Group. Worlds Ahead: The Berkley Science Fiction Newsletter. New York, N.Y.: Berkley Publishing.
MLA (9th ed.) CitationBerkley Publishing Group. Worlds Ahead: The Berkley Science Fiction Newsletter. Berkley Publishing.
Warning: These citations may not always be 100% accurate.