| APA | EHV4. (2012, February 12). In Acronym Geek. Retrieved 07:20, February 12, 2012, from http://www.acronymgeek.com/EHV4 |
| MLA | "EHV4." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/EHV4>. |
| MHRA | 'EHV4', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/EHV4> [accessed 12 February 2012] |
| Chicago | "EHV4", http://www.acronymgeek.com/EHV4 (accessed February 12, 2012). |
| CBE/CSE | EHV4 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/EHV4. |
| Bluebook | EHV4, http://www.acronymgeek.com/EHV4 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHV4, http://www.acronymgeek.com/EHV4 (optional description here) (as of Feb. 12, 2012, 07:20). |
| AMA | EHV4. Acronym Geek. February 12, 2012, 07:20. Available at: http://www.acronymgeek.com/EHV4. Accessed February 12, 2012, 07:20. |