| APA | Smart Define. (2015). optical illusion thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/optical_illusion/thesaurus/related |
| Chicago | Smart Define. 2015. "optical illusion thesaurus" https://smartdefine.org/optical_illusion/thesaurus/related (accessed September 24, 2026). |
| Harvard | Smart Define 2015, optical illusion thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/optical_illusion/thesaurus/related>. |
| MLA | Smart Define. "optical illusion thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/optical_illusion/thesaurus/related> |