| APA | Smart Define. (2015). depository thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/depository/thesaurus/narrower |
| Chicago | Smart Define. 2015. "depository thesaurus" https://smartdefine.org/depository/thesaurus/narrower (accessed September 21, 2026). |
| Harvard | Smart Define 2015, depository thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/depository/thesaurus/narrower>. |
| MLA | Smart Define. "depository thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/depository/thesaurus/narrower> |