| APA | Smart Define. (2011). cradle of modern america thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/cradle_of_modern_america/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "cradle of modern america thesaurus" https://smartdefine.org/cradle_of_modern_america/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2011, cradle of modern america thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/cradle_of_modern_america/thesaurus/synonyms>. |
| MLA | Smart Define. "cradle of modern america thesaurus" 19 May 2011. Web. 25 September 2026. <https://smartdefine.org/cradle_of_modern_america/thesaurus/synonyms> |