| APA | Smart Define. (2013). egg shell thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/egg_shell/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "egg shell thesaurus" https://smartdefine.org/egg_shell/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2013, egg shell thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/egg_shell/thesaurus/synonyms>. |
| MLA | Smart Define. "egg shell thesaurus" 18 May 2013. Web. 21 September 2026. <https://smartdefine.org/egg_shell/thesaurus/synonyms> |