(p.pr.&vb.n.) of Birr.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). birring. Retrieved September 20, 2026, from http://smartdefine.org/birring/definitions/1980523 |
| Chicago | Webster's. 2011. "birring" http://smartdefine.org/birring/definitions/1980523 (accessed September 20, 2026). |
| Harvard | Webster's 2011, birring, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/birring/definitions/1980523>. |
| MLA | Webster's. "birring" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/birring/definitions/1980523> |