| APA | Smart Define. (-0001). tough stuff thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tough_stuff/thesaurus/related |
| Chicago | Smart Define. -0001. "tough stuff thesaurus" https://smartdefine.org/tough_stuff/thesaurus/related (accessed September 24, 2026). |
| Harvard | Smart Define -0001, tough stuff thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tough_stuff/thesaurus/related>. |
| MLA | Smart Define. "tough stuff thesaurus" 30 November -0001. Web. 24 September 2026. <https://smartdefine.org/tough_stuff/thesaurus/related> |