Cita APA (7th ed.)

Science Fiction Writers of America & Bova, B. The science fiction hall of fame. Gollancz.

Cita Chicago (17th ed.)

Science Fiction Writers of America i Ben Bova. The Science Fiction Hall of Fame. London: Gollancz.

Cita MLA (8th ed.)

Science Fiction Writers of America i Ben Bova. The Science Fiction Hall of Fame. Gollancz.