Cita APA (7th ed.)

Clute, J., & Nicholls, P. (1993). The encyclopedia of science fiction. St. Martin's Press.

Cita Chicago (17th ed.)

Clute, John, i Peter Nicholls. The Encyclopedia of Science Fiction. New York: St. Martin's Press, 1993.

Cita MLA (9th ed.)

Clute, John, i Peter Nicholls. The Encyclopedia of Science Fiction. St. Martin's Press, 1993.