| APA | HKDN. (2012, February 15). In Acronym Geek. Retrieved 06:44, February 15, 2012, from http://www.acronymgeek.com/HKDN |
| MLA | "HKDN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HKDN>. |
| MHRA | 'HKDN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HKDN> [accessed 15 February 2012] |
| Chicago | "HKDN", http://www.acronymgeek.com/HKDN (accessed February 15, 2012). |
| CBE/CSE | HKDN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HKDN. |
| Bluebook | HKDN, http://www.acronymgeek.com/HKDN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HKDN, http://www.acronymgeek.com/HKDN (optional description here) (as of Feb. 15, 2012, 06:44). |
| AMA | HKDN. Acronym Geek. February 15, 2012, 06:44. Available at: http://www.acronymgeek.com/HKDN. Accessed February 15, 2012, 06:44. |