| APA | Smart Define. (1970). big unportable instrument thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/big_unportable_instrument/thesaurus/antonyms |
| Chicago | Smart Define. 1970. "big unportable instrument thesaurus" https://smartdefine.org/big_unportable_instrument/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 1970, big unportable instrument thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/big_unportable_instrument/thesaurus/antonyms>. |
| MLA | Smart Define. "big unportable instrument thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/big_unportable_instrument/thesaurus/antonyms> |