| APA | Smart Define. (2011). top secret information thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/top_secret_information/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "top secret information thesaurus" https://smartdefine.org/top_secret_information/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2011, top secret information thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/top_secret_information/thesaurus/synonyms>. |
| MLA | Smart Define. "top secret information thesaurus" 20 May 2011. Web. 1 October 2026. <https://smartdefine.org/top_secret_information/thesaurus/synonyms> |