| APA | Smart Define. (2013). stony-hearted thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stony-hearted/thesaurus/broader |
| Chicago | Smart Define. 2013. "stony-hearted thesaurus" https://smartdefine.org/stony-hearted/thesaurus/broader (accessed September 25, 2026). |
| Harvard | Smart Define 2013, stony-hearted thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stony-hearted/thesaurus/broader>. |
| MLA | Smart Define. "stony-hearted thesaurus" 15 November 2013. Web. 25 September 2026. <https://smartdefine.org/stony-hearted/thesaurus/broader> |