| APA | Smart Define. (2016). adult thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/adult/thesaurus/narrower |
| Chicago | Smart Define. 2016. "adult thesaurus" https://smartdefine.org/adult/thesaurus/narrower (accessed September 30, 2026). |
| Harvard | Smart Define 2016, adult thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/adult/thesaurus/narrower>. |
| MLA | Smart Define. "adult thesaurus" 30 March 2016. Web. 30 September 2026. <https://smartdefine.org/adult/thesaurus/narrower> |