| APA | Smart Define. (-0001). spaceship earth thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/spaceship_earth/thesaurus/related |
| Chicago | Smart Define. -0001. "spaceship earth thesaurus" https://smartdefine.org/spaceship_earth/thesaurus/related (accessed September 30, 2026). |
| Harvard | Smart Define -0001, spaceship earth thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/spaceship_earth/thesaurus/related>. |
| MLA | Smart Define. "spaceship earth thesaurus" 30 November -0001. Web. 30 September 2026. <https://smartdefine.org/spaceship_earth/thesaurus/related> |