| APA | Smart Define. (2016). certify thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/certify/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "certify thesaurus" https://smartdefine.org/certify/thesaurus/antonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, certify thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/certify/thesaurus/antonyms>. |
| MLA | Smart Define. "certify thesaurus" 11 January 2016. Web. 21 September 2026. <https://smartdefine.org/certify/thesaurus/antonyms> |