| APA | Smart Define. (2011). be of useful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/be_of_useful/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "be of useful thesaurus" https://smartdefine.org/be_of_useful/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2011, be of useful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/be_of_useful/thesaurus/synonyms>. |
| MLA | Smart Define. "be of useful thesaurus" 29 May 2011. Web. 25 September 2026. <https://smartdefine.org/be_of_useful/thesaurus/synonyms> |