| APA | Smart Define. (2011). be economical with thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/be_economical_with/thesaurus/antonyms |
| Chicago | Smart Define. 2011. "be economical with thesaurus" https://smartdefine.org/be_economical_with/thesaurus/antonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2011, be economical with thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/be_economical_with/thesaurus/antonyms>. |
| MLA | Smart Define. "be economical with thesaurus" 21 May 2011. Web. 30 September 2026. <https://smartdefine.org/be_economical_with/thesaurus/antonyms> |