| APA | Smart Define. (2016). open-and-shut thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/open-and-shut/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "open-and-shut thesaurus" https://smartdefine.org/open-and-shut/thesaurus/antonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, open-and-shut thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/open-and-shut/thesaurus/antonyms>. |
| MLA | Smart Define. "open-and-shut thesaurus" 31 March 2016. Web. 30 September 2026. <https://smartdefine.org/open-and-shut/thesaurus/antonyms> |