Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). lethe. Retrieved September 24, 2026, from http://smartdefine.org/lethe/definitions/2027492 |
| Chicago | Webster's. 2011. "lethe" http://smartdefine.org/lethe/definitions/2027492 (accessed September 24, 2026). |
| Harvard | Webster's 2011, lethe, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/lethe/definitions/2027492>. |
| MLA | Webster's. "lethe" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/lethe/definitions/2027492> |