| APA | Smart Define. (2011). pit of the stomach thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/pit_of_the_stomach/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "pit of the stomach thesaurus" https://smartdefine.org/pit_of_the_stomach/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2011, pit of the stomach thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/pit_of_the_stomach/thesaurus/synonyms>. |
| MLA | Smart Define. "pit of the stomach thesaurus" 26 April 2011. Web. 20 September 2026. <https://smartdefine.org/pit_of_the_stomach/thesaurus/synonyms> |