Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). penetrant. Retrieved September 20, 2026, from http://smartdefine.org/penetrant/definitions/2043326 |
| Chicago | Webster's. 2011. "penetrant" http://smartdefine.org/penetrant/definitions/2043326 (accessed September 20, 2026). |
| Harvard | Webster's 2011, penetrant, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/penetrant/definitions/2043326>. |
| MLA | Webster's. "penetrant" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/penetrant/definitions/2043326> |