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