| APA | Smart Define. (2016). backer thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/backer/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "backer thesaurus" https://smartdefine.org/backer/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, backer thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/backer/thesaurus/antonyms>. |
| MLA | Smart Define. "backer thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/backer/thesaurus/antonyms> |