| APA | Smart Define. (2015). science fiction thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/science_fiction/thesaurus/narrower |
| Chicago | Smart Define. 2015. "science fiction thesaurus" https://smartdefine.org/science_fiction/thesaurus/narrower (accessed September 26, 2026). |
| Harvard | Smart Define 2015, science fiction thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/science_fiction/thesaurus/narrower>. |
| MLA | Smart Define. "science fiction thesaurus" 9 September 2015. Web. 26 September 2026. <https://smartdefine.org/science_fiction/thesaurus/narrower> |