| APA | HKOR. (2012, February 15). In Acronym Geek. Retrieved 01:28, February 15, 2012, from http://www.acronymgeek.com/HKOR |
| MLA | "HKOR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HKOR>. |
| MHRA | 'HKOR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HKOR> [accessed 15 February 2012] |
| Chicago | "HKOR", http://www.acronymgeek.com/HKOR (accessed February 15, 2012). |
| CBE/CSE | HKOR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HKOR. |
| Bluebook | HKOR, http://www.acronymgeek.com/HKOR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HKOR, http://www.acronymgeek.com/HKOR (optional description here) (as of Feb. 15, 2012, 01:28). |
| AMA | HKOR. Acronym Geek. February 15, 2012, 01:28. Available at: http://www.acronymgeek.com/HKOR. Accessed February 15, 2012, 01:28. |