| APA | Smart Define. (2016). cross the styx thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/cross_the_styx/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "cross the styx thesaurus" https://smartdefine.org/cross_the_styx/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, cross the styx thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/cross_the_styx/thesaurus/synonyms>. |
| MLA | Smart Define. "cross the styx thesaurus" 18 March 2016. Web. 22 September 2026. <https://smartdefine.org/cross_the_styx/thesaurus/synonyms> |