Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). bacteria. Retrieved September 21, 2026, from http://smartdefine.org/bacteria/definitions/1977854 |
| Chicago | Webster's. 2011. "bacteria" http://smartdefine.org/bacteria/definitions/1977854 (accessed September 21, 2026). |
| Harvard | Webster's 2011, bacteria, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/bacteria/definitions/1977854>. |
| MLA | Webster's. "bacteria" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/bacteria/definitions/1977854> |