| APA | IEHK. (2012, February 16). In Acronym Geek. Retrieved 19:04, February 16, 2012, from http://www.acronymgeek.com/IEHK |
| MLA | "IEHK." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/IEHK>. |
| MHRA | 'IEHK', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/IEHK> [accessed 16 February 2012] |
| Chicago | "IEHK", http://www.acronymgeek.com/IEHK (accessed February 16, 2012). |
| CBE/CSE | IEHK [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/IEHK. |
| Bluebook | IEHK, http://www.acronymgeek.com/IEHK (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IEHK, http://www.acronymgeek.com/IEHK (optional description here) (as of Feb. 16, 2012, 19:04). |
| AMA | IEHK. Acronym Geek. February 16, 2012, 19:04. Available at: http://www.acronymgeek.com/IEHK. Accessed February 16, 2012, 19:04. |