| APA | Smart Define. (1970). opening at the opposite end of an animal's digestive tract from the mouth thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/opening_at_the_opposite_end_of_an_animal%27s_digestive_tract_from_the_mouth/thesaurus/synonyms |
| Chicago | Smart Define. 1970. "opening at the opposite end of an animal's digestive tract from the mouth thesaurus" https://smartdefine.org/opening_at_the_opposite_end_of_an_animal%27s_digestive_tract_from_the_mouth/thesaurus/synonyms (accessed October 2, 2026). |
| Harvard | Smart Define 1970, opening at the opposite end of an animal's digestive tract from the mouth thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/opening_at_the_opposite_end_of_an_animal%27s_digestive_tract_from_the_mouth/thesaurus/synonyms>. |
| MLA | Smart Define. "opening at the opposite end of an animal's digestive tract from the mouth thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/opening_at_the_opposite_end_of_an_animal%27s_digestive_tract_from_the_mouth/thesaurus/synonyms> |