APA (7th ed.) Citation

Parker, H. N. (1977). Biological themes in modern science fiction. [publisher not identified].

Chicago Style (17th ed.) Citation

Parker, Helen Nethercutt. Biological Themes in Modern Science Fiction. [Place of publication not identified]: [publisher not identified], 1977.

MLA (9th ed.) Citation

Parker, Helen Nethercutt. Biological Themes in Modern Science Fiction. [publisher not identified], 1977.

Warning: These citations may not always be 100% accurate.