| APA | ENS. (2012, February 14). In Acronym Geek. Retrieved 07:08, February 14, 2012, from http://www.acronymgeek.com/ENS |
| MLA | "ENS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ENS>. |
| MHRA | 'ENS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ENS> [accessed 14 February 2012] |
| Chicago | "ENS", http://www.acronymgeek.com/ENS (accessed February 14, 2012). |
| CBE/CSE | ENS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ENS. |
| Bluebook | ENS, http://www.acronymgeek.com/ENS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ENS, http://www.acronymgeek.com/ENS (optional description here) (as of Feb. 14, 2012, 07:08). |
| AMA | ENS. Acronym Geek. February 14, 2012, 07:08. Available at: http://www.acronymgeek.com/ENS. Accessed February 14, 2012, 07:08. |