| APA | Smart Define. (2016). heat energy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/heat_energy/thesaurus/narrower |
| Chicago | Smart Define. 2016. "heat energy thesaurus" https://smartdefine.org/heat_energy/thesaurus/narrower (accessed September 29, 2026). |
| Harvard | Smart Define 2016, heat energy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/heat_energy/thesaurus/narrower>. |
| MLA | Smart Define. "heat energy thesaurus" 25 February 2016. Web. 29 September 2026. <https://smartdefine.org/heat_energy/thesaurus/narrower> |