| APA | Smart Define. (2011). philosophers' stone thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/philosophers%27_stone/thesaurus/broader |
| Chicago | Smart Define. 2011. "philosophers' stone thesaurus" https://smartdefine.org/philosophers%27_stone/thesaurus/broader (accessed September 28, 2026). |
| Harvard | Smart Define 2011, philosophers' stone thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/philosophers%27_stone/thesaurus/broader>. |
| MLA | Smart Define. "philosophers' stone thesaurus" 23 May 2011. Web. 28 September 2026. <https://smartdefine.org/philosophers%27_stone/thesaurus/broader> |