| APA | Smart Define. (2013). calculus of variations thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/calculus_of_variations/thesaurus/broader |
| Chicago | Smart Define. 2013. "calculus of variations thesaurus" https://smartdefine.org/calculus_of_variations/thesaurus/broader (accessed September 23, 2026). |
| Harvard | Smart Define 2013, calculus of variations thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/calculus_of_variations/thesaurus/broader>. |
| MLA | Smart Define. "calculus of variations thesaurus" 17 May 2013. Web. 23 September 2026. <https://smartdefine.org/calculus_of_variations/thesaurus/broader> |