| APA | Smart Define. (-0001). that'll be the day thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/that%27ll_be_the_day/thesaurus/broader |
| Chicago | Smart Define. -0001. "that'll be the day thesaurus" https://smartdefine.org/that%27ll_be_the_day/thesaurus/broader (accessed September 22, 2026). |
| Harvard | Smart Define -0001, that'll be the day thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/that%27ll_be_the_day/thesaurus/broader>. |
| MLA | Smart Define. "that'll be the day thesaurus" 30 November -0001. Web. 22 September 2026. <https://smartdefine.org/that%27ll_be_the_day/thesaurus/broader> |