| APA | Smart Define. (-0001). usutu virus thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/usutu_virus/thesaurus/broader |
| Chicago | Smart Define. -0001. "usutu virus thesaurus" https://smartdefine.org/usutu_virus/thesaurus/broader (accessed October 2, 2026). |
| Harvard | Smart Define -0001, usutu virus thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/usutu_virus/thesaurus/broader>. |
| MLA | Smart Define. "usutu virus thesaurus" 30 November -0001. Web. 2 October 2026. <https://smartdefine.org/usutu_virus/thesaurus/broader> |