Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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