Cita APA (7th ed.)
Aldiss, B. W. Billion Year Spree: The History of Science Fiction. Doubleday.
Cita Chicago (17th ed.)
Aldiss, Brian Wilson. Billion Year Spree: The History of Science Fiction. Nueva York, EUA: Doubleday.
Cita MLA (9th ed.)
Aldiss, Brian Wilson. Billion Year Spree: The History of Science Fiction. Doubleday.
Atenció: Aquestes cites poden no estar 100% correctes.