| APA | Smart Define. (2013). purple-green thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/purple-green/thesaurus/antonyms |
| Chicago | Smart Define. 2013. "purple-green thesaurus" https://smartdefine.org/purple-green/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2013, purple-green thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/purple-green/thesaurus/antonyms>. |
| MLA | Smart Define. "purple-green thesaurus" 28 June 2013. Web. 29 September 2026. <https://smartdefine.org/purple-green/thesaurus/antonyms> |