| APA | Smart Define. (2011). Sir Peter Brian Medawar thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sir_peter_brian_medawar/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "Sir Peter Brian Medawar thesaurus" https://smartdefine.org/sir_peter_brian_medawar/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2011, Sir Peter Brian Medawar thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sir_peter_brian_medawar/thesaurus/synonyms>. |
| MLA | Smart Define. "Sir Peter Brian Medawar thesaurus" 26 April 2011. Web. 23 September 2026. <https://smartdefine.org/sir_peter_brian_medawar/thesaurus/synonyms> |