| APA | Smart Define. (-0001). ecological efficiency thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ecological_efficiency/thesaurus/related |
| Chicago | Smart Define. -0001. "ecological efficiency thesaurus" https://smartdefine.org/ecological_efficiency/thesaurus/related (accessed September 23, 2026). |
| Harvard | Smart Define -0001, ecological efficiency thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ecological_efficiency/thesaurus/related>. |
| MLA | Smart Define. "ecological efficiency thesaurus" 30 November -0001. Web. 23 September 2026. <https://smartdefine.org/ecological_efficiency/thesaurus/related> |