Cita APA

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

Chicago Edition Citation

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

Cita MLA

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