APA استشهاد

Clute, J. E., & Nicholls, P. E. (1993). The Encyclopedia of Science fiction.

استشهاد بنمط شيكاغو

Clute, John; Ed, و Peter; Ed Nicholls. The Encyclopedia of Science Fiction. New York, Martin`s Press, 1993.

MLA استشهاد

Clute, John; Ed, و Peter; Ed Nicholls. The Encyclopedia of Science Fiction. 1993.