| APA | Smart Define. (2016). old-hat thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/old-hat/thesaurus/related |
| Chicago | Smart Define. 2016. "old-hat thesaurus" https://smartdefine.org/old-hat/thesaurus/related (accessed September 27, 2026). |
| Harvard | Smart Define 2016, old-hat thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/old-hat/thesaurus/related>. |
| MLA | Smart Define. "old-hat thesaurus" 29 February 2016. Web. 27 September 2026. <https://smartdefine.org/old-hat/thesaurus/related> |