Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.