| APA | Smart Define. (-0001). National Center for Immunization and Respiratory Diseases thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/national_center_for_immunization_and_respiratory_diseases/thesaurus/broader |
| Chicago | Smart Define. -0001. "National Center for Immunization and Respiratory Diseases thesaurus" https://smartdefine.org/national_center_for_immunization_and_respiratory_diseases/thesaurus/broader (accessed September 30, 2026). |
| Harvard | Smart Define -0001, National Center for Immunization and Respiratory Diseases thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/national_center_for_immunization_and_respiratory_diseases/thesaurus/broader>. |
| MLA | Smart Define. "National Center for Immunization and Respiratory Diseases thesaurus" 30 November -0001. Web. 30 September 2026. <https://smartdefine.org/national_center_for_immunization_and_respiratory_diseases/thesaurus/broader> |