| APA | Smart Define. (1970). paperless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/paperless/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "paperless thesaurus" https://smartdefine.org/paperless/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 1970, paperless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/paperless/thesaurus/antonyms>. |
| MLA | Smart Define. "paperless thesaurus" 1 January 1970. Web. 25 September 2026. <https://smartdefine.org/paperless/thesaurus/antonyms> |