| APA | Smart Define. (2015). extension ladder thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/extension_ladder/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "extension ladder thesaurus" https://smartdefine.org/extension_ladder/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, extension ladder thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/extension_ladder/thesaurus/synonyms>. |
| MLA | Smart Define. "extension ladder thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/extension_ladder/thesaurus/synonyms> |