| APA | Smart Define. (2016). black-hearted thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/black-hearted/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "black-hearted thesaurus" https://smartdefine.org/black-hearted/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, black-hearted thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/black-hearted/thesaurus/synonyms>. |
| MLA | Smart Define. "black-hearted thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/black-hearted/thesaurus/synonyms> |