| APA | Smart Define. (-0001). first-of-a-kind thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/first-of-a-kind/thesaurus/synonyms |
| Chicago | Smart Define. -0001. "first-of-a-kind thesaurus" https://smartdefine.org/first-of-a-kind/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define -0001, first-of-a-kind thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/first-of-a-kind/thesaurus/synonyms>. |
| MLA | Smart Define. "first-of-a-kind thesaurus" 30 November -0001. Web. 28 September 2026. <https://smartdefine.org/first-of-a-kind/thesaurus/synonyms> |