| APA | Smart Define. (2011). natural language processing application thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/natural_language_processing_application/thesaurus/narrower |
| Chicago | Smart Define. 2011. "natural language processing application thesaurus" https://smartdefine.org/natural_language_processing_application/thesaurus/narrower (accessed September 20, 2026). |
| Harvard | Smart Define 2011, natural language processing application thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/natural_language_processing_application/thesaurus/narrower>. |
| MLA | Smart Define. "natural language processing application thesaurus" 26 April 2011. Web. 20 September 2026. <https://smartdefine.org/natural_language_processing_application/thesaurus/narrower> |