Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). thumbkin. Retrieved September 24, 2026, from http://smartdefine.org/thumbkin/definitions/2072445 |
| Chicago | Webster's. 2011. "thumbkin" http://smartdefine.org/thumbkin/definitions/2072445 (accessed September 24, 2026). |
| Harvard | Webster's 2011, thumbkin, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/thumbkin/definitions/2072445>. |
| MLA | Webster's. "thumbkin" 28 May 2011. Web. 24 September 2026. <http://smartdefine.org/thumbkin/definitions/2072445> |