Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). astonish. Retrieved September 24, 2026, from http://smartdefine.org/astonish/definitions/1976625 |
| Chicago | Webster's. 2011. "astonish" http://smartdefine.org/astonish/definitions/1976625 (accessed September 24, 2026). |
| Harvard | Webster's 2011, astonish, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/astonish/definitions/1976625>. |
| MLA | Webster's. "astonish" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/astonish/definitions/1976625> |