| APA | Smart Define. (2011). industrial air pollution thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/industrial_air_pollution/thesaurus/broader |
| Chicago | Smart Define. 2011. "industrial air pollution thesaurus" https://smartdefine.org/industrial_air_pollution/thesaurus/broader (accessed September 26, 2026). |
| Harvard | Smart Define 2011, industrial air pollution thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/industrial_air_pollution/thesaurus/broader>. |
| MLA | Smart Define. "industrial air pollution thesaurus" 26 April 2011. Web. 26 September 2026. <https://smartdefine.org/industrial_air_pollution/thesaurus/broader> |