Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). vacillate. Retrieved September 21, 2026, from http://smartdefine.org/vacillate/definitions/2078506 |
| Chicago | Webster's. 2011. "vacillate" http://smartdefine.org/vacillate/definitions/2078506 (accessed September 21, 2026). |
| Harvard | Webster's 2011, vacillate, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/vacillate/definitions/2078506>. |
| MLA | Webster's. "vacillate" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/vacillate/definitions/2078506> |