| APA | Smart Define. (1970). standard form of digits thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/standard_form_of_digits/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "standard form of digits thesaurus" https://smartdefine.org/standard_form_of_digits/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 1970, standard form of digits thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/standard_form_of_digits/thesaurus/antonyms>. |
| MLA | Smart Define. "standard form of digits thesaurus" 1 January 1970. Web. 27 September 2026. <https://smartdefine.org/standard_form_of_digits/thesaurus/antonyms> |