| APA | Smart Define. (2015). physics class unit thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/physics_class_unit/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "physics class unit thesaurus" https://smartdefine.org/physics_class_unit/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, physics class unit thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/physics_class_unit/thesaurus/synonyms>. |
| MLA | Smart Define. "physics class unit thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/physics_class_unit/thesaurus/synonyms> |