Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). bottomless. Retrieved September 23, 2026, from http://smartdefine.org/bottomless/definitions/1981820 |
| Chicago | Webster's. 2011. "bottomless" http://smartdefine.org/bottomless/definitions/1981820 (accessed September 23, 2026). |
| Harvard | Webster's 2011, bottomless, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/bottomless/definitions/1981820>. |
| MLA | Webster's. "bottomless" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/bottomless/definitions/1981820> |