| APA | Smart Define. (2013). trumpet-shaped thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/trumpet-shaped/thesaurus/antonyms |
| Chicago | Smart Define. 2013. "trumpet-shaped thesaurus" https://smartdefine.org/trumpet-shaped/thesaurus/antonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2013, trumpet-shaped thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/trumpet-shaped/thesaurus/antonyms>. |
| MLA | Smart Define. "trumpet-shaped thesaurus" 28 June 2013. Web. 1 October 2026. <https://smartdefine.org/trumpet-shaped/thesaurus/antonyms> |