| APA | Smart Define. (2014). central idea thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/central_idea/thesaurus/related |
| Chicago | Smart Define. 2014. "central idea thesaurus" https://smartdefine.org/central_idea/thesaurus/related (accessed September 23, 2026). |
| Harvard | Smart Define 2014, central idea thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/central_idea/thesaurus/related>. |
| MLA | Smart Define. "central idea thesaurus" 30 September 2014. Web. 23 September 2026. <https://smartdefine.org/central_idea/thesaurus/related> |