| APA | Smart Define. (2015). no longer existing thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/no_longer_existing/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "no longer existing thesaurus" https://smartdefine.org/no_longer_existing/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, no longer existing thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/no_longer_existing/thesaurus/synonyms>. |
| MLA | Smart Define. "no longer existing thesaurus" 2 September 2015. Web. 20 September 2026. <https://smartdefine.org/no_longer_existing/thesaurus/synonyms> |