Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). villi. Retrieved September 22, 2026, from http://smartdefine.org/villi/definitions/2079698 |
| Chicago | Webster's. 2011. "villi" http://smartdefine.org/villi/definitions/2079698 (accessed September 22, 2026). |
| Harvard | Webster's 2011, villi, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/villi/definitions/2079698>. |
| MLA | Webster's. "villi" 28 May 2011. Web. 22 September 2026. <http://smartdefine.org/villi/definitions/2079698> |