| APA | EFHX. (2012, February 16). In Acronym Geek. Retrieved 07:23, February 16, 2012, from http://www.acronymgeek.com/EFHX |
| MLA | "EFHX." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/EFHX>. |
| MHRA | 'EFHX', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/EFHX> [accessed 16 February 2012] |
| Chicago | "EFHX", http://www.acronymgeek.com/EFHX (accessed February 16, 2012). |
| CBE/CSE | EFHX [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/EFHX. |
| Bluebook | EFHX, http://www.acronymgeek.com/EFHX (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EFHX, http://www.acronymgeek.com/EFHX (optional description here) (as of Feb. 16, 2012, 07:23). |
| AMA | EFHX. Acronym Geek. February 16, 2012, 07:23. Available at: http://www.acronymgeek.com/EFHX. Accessed February 16, 2012, 07:23. |