| APA | EHX. (2012, February 11). In Acronym Geek. Retrieved 22:47, February 11, 2012, from http://www.acronymgeek.com/EHX |
| MLA | "EHX." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EHX>. |
| MHRA | 'EHX', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EHX> [accessed 11 February 2012] |
| Chicago | "EHX", http://www.acronymgeek.com/EHX (accessed February 11, 2012). |
| CBE/CSE | EHX [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EHX. |
| Bluebook | EHX, http://www.acronymgeek.com/EHX (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHX, http://www.acronymgeek.com/EHX (optional description here) (as of Feb. 11, 2012, 22:47). |
| AMA | EHX. Acronym Geek. February 11, 2012, 22:47. Available at: http://www.acronymgeek.com/EHX. Accessed February 11, 2012, 22:47. |