| APA | Smart Define. (2016). shut tight thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/shut_tight/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "shut tight thesaurus" https://smartdefine.org/shut_tight/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, shut tight thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/shut_tight/thesaurus/synonyms>. |
| MLA | Smart Define. "shut tight thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/shut_tight/thesaurus/synonyms> |