| APA | Smart Define. (1970). not-so-perfect day thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/not-so-perfect_day/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "not-so-perfect day thesaurus" https://smartdefine.org/not-so-perfect_day/thesaurus/antonyms (accessed September 29, 2026). |
| Harvard | Smart Define 1970, not-so-perfect day thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/not-so-perfect_day/thesaurus/antonyms>. |
| MLA | Smart Define. "not-so-perfect day thesaurus" 1 January 1970. Web. 29 September 2026. <https://smartdefine.org/not-so-perfect_day/thesaurus/antonyms> |