| APA | Smart Define. (-0001). royal college of ophthalmologists thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/royal_college_of_ophthalmologists/thesaurus/broader |
| Chicago | Smart Define. -0001. "royal college of ophthalmologists thesaurus" https://smartdefine.org/royal_college_of_ophthalmologists/thesaurus/broader (accessed October 1, 2026). |
| Harvard | Smart Define -0001, royal college of ophthalmologists thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/royal_college_of_ophthalmologists/thesaurus/broader>. |
| MLA | Smart Define. "royal college of ophthalmologists thesaurus" 30 November -0001. Web. 1 October 2026. <https://smartdefine.org/royal_college_of_ophthalmologists/thesaurus/broader> |