| APA | Smart Define. (2011). bright as a new penny thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/bright_as_a_new_penny/thesaurus/related |
| Chicago | Smart Define. 2011. "bright as a new penny thesaurus" https://smartdefine.org/bright_as_a_new_penny/thesaurus/related (accessed September 25, 2026). |
| Harvard | Smart Define 2011, bright as a new penny thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/bright_as_a_new_penny/thesaurus/related>. |
| MLA | Smart Define. "bright as a new penny thesaurus" 26 April 2011. Web. 25 September 2026. <https://smartdefine.org/bright_as_a_new_penny/thesaurus/related> |