| APA | Smart Define. (2013). first harmonic thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/first_harmonic/thesaurus/broader |
| Chicago | Smart Define. 2013. "first harmonic thesaurus" https://smartdefine.org/first_harmonic/thesaurus/broader (accessed September 20, 2026). |
| Harvard | Smart Define 2013, first harmonic thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/first_harmonic/thesaurus/broader>. |
| MLA | Smart Define. "first harmonic thesaurus" 18 May 2013. Web. 20 September 2026. <https://smartdefine.org/first_harmonic/thesaurus/broader> |