| APA | Smart Define. (2011). william penn adair rogers thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/william_penn_adair_rogers/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "william penn adair rogers thesaurus" https://smartdefine.org/william_penn_adair_rogers/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2011, william penn adair rogers thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/william_penn_adair_rogers/thesaurus/synonyms>. |
| MLA | Smart Define. "william penn adair rogers thesaurus" 26 April 2011. Web. 29 September 2026. <https://smartdefine.org/william_penn_adair_rogers/thesaurus/synonyms> |