| APA | Smart Define. (2011). twilight sleep thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/twilight_sleep/thesaurus/broader |
| Chicago | Smart Define. 2011. "twilight sleep thesaurus" https://smartdefine.org/twilight_sleep/thesaurus/broader (accessed September 22, 2026). |
| Harvard | Smart Define 2011, twilight sleep thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/twilight_sleep/thesaurus/broader>. |
| MLA | Smart Define. "twilight sleep thesaurus" 26 April 2011. Web. 22 September 2026. <https://smartdefine.org/twilight_sleep/thesaurus/broader> |