| APA | Smart Define. (-0001). vehicle engine exhaust smoke system thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/vehicle_engine_exhaust_smoke_system/thesaurus/broader |
| Chicago | Smart Define. -0001. "vehicle engine exhaust smoke system thesaurus" https://smartdefine.org/vehicle_engine_exhaust_smoke_system/thesaurus/broader (accessed October 1, 2026). |
| Harvard | Smart Define -0001, vehicle engine exhaust smoke system thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/vehicle_engine_exhaust_smoke_system/thesaurus/broader>. |
| MLA | Smart Define. "vehicle engine exhaust smoke system thesaurus" 30 November -0001. Web. 1 October 2026. <https://smartdefine.org/vehicle_engine_exhaust_smoke_system/thesaurus/broader> |