| APA | Smart Define. (2016). long day thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/long_day/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "long day thesaurus" https://smartdefine.org/long_day/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, long day thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/long_day/thesaurus/synonyms>. |
| MLA | Smart Define. "long day thesaurus" 3 March 2016. Web. 21 September 2026. <https://smartdefine.org/long_day/thesaurus/synonyms> |