| APA | Smart Define. (2015). gastrointestinal tract thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/gastrointestinal_tract/thesaurus/broader |
| Chicago | Smart Define. 2015. "gastrointestinal tract thesaurus" https://smartdefine.org/gastrointestinal_tract/thesaurus/broader (accessed September 28, 2026). |
| Harvard | Smart Define 2015, gastrointestinal tract thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/gastrointestinal_tract/thesaurus/broader>. |
| MLA | Smart Define. "gastrointestinal tract thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/gastrointestinal_tract/thesaurus/broader> |