APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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