| APA | Smart Define. (2011). lowercase letter thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/lowercase_letter/thesaurus/related |
| Chicago | Smart Define. 2011. "lowercase letter thesaurus" https://smartdefine.org/lowercase_letter/thesaurus/related (accessed September 25, 2026). |
| Harvard | Smart Define 2011, lowercase letter thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/lowercase_letter/thesaurus/related>. |
| MLA | Smart Define. "lowercase letter thesaurus" 24 May 2011. Web. 25 September 2026. <https://smartdefine.org/lowercase_letter/thesaurus/related> |