APA (7th ed.) Citation

Mogen, D. (1977). Frontier themes in science fiction. [publisher not identified].

Chicago Style (17th ed.) Citation

Mogen, David. Frontier Themes in Science Fiction. Boulder, Colo. : University of Colorado: [publisher not identified], 1977.

MLA (9th ed.) Citation

Mogen, David. Frontier Themes in Science Fiction. [publisher not identified], 1977.