APA (7th ed.) Citation

Hogan, J. P. (1984). Optimism in science fiction. [publisher not identified].

Chicago Style (17th ed.) Citation

Hogan, James P. Optimism in Science Fiction. [Place of publication not identified]: [publisher not identified], 1984.

MLA (9th ed.) Citation

Hogan, James P. Optimism in Science Fiction. [publisher not identified], 1984.