| APA | Smart Define. (2013). biological group thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/biological_group/thesaurus/antonyms |
| Chicago | Smart Define. 2013. "biological group thesaurus" https://smartdefine.org/biological_group/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2013, biological group thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/biological_group/thesaurus/antonyms>. |
| MLA | Smart Define. "biological group thesaurus" 18 May 2013. Web. 27 September 2026. <https://smartdefine.org/biological_group/thesaurus/antonyms> |