| APA | Smart Define. (2011). by direct representation thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/by_direct_representation/thesaurus/narrower |
| Chicago | Smart Define. 2011. "by direct representation thesaurus" https://smartdefine.org/by_direct_representation/thesaurus/narrower (accessed September 21, 2026). |
| Harvard | Smart Define 2011, by direct representation thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/by_direct_representation/thesaurus/narrower>. |
| MLA | Smart Define. "by direct representation thesaurus" 2 May 2011. Web. 21 September 2026. <https://smartdefine.org/by_direct_representation/thesaurus/narrower> |