| APA | Smart Define. (2016). insubstantial thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/insubstantial/thesaurus/broader |
| Chicago | Smart Define. 2016. "insubstantial thesaurus" https://smartdefine.org/insubstantial/thesaurus/broader (accessed September 24, 2026). |
| Harvard | Smart Define 2016, insubstantial thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/insubstantial/thesaurus/broader>. |
| MLA | Smart Define. "insubstantial thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/insubstantial/thesaurus/broader> |