| APA | Smart Define. (2015). pleasant-sounding thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/pleasant-sounding/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "pleasant-sounding thesaurus" https://smartdefine.org/pleasant-sounding/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, pleasant-sounding thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/pleasant-sounding/thesaurus/antonyms>. |
| MLA | Smart Define. "pleasant-sounding thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/pleasant-sounding/thesaurus/antonyms> |