| APA | HKDE. (2012, February 17). In Acronym Geek. Retrieved 04:14, February 17, 2012, from http://www.acronymgeek.com/HKDE |
| MLA | "HKDE." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HKDE>. |
| MHRA | 'HKDE', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HKDE> [accessed 17 February 2012] |
| Chicago | "HKDE", http://www.acronymgeek.com/HKDE (accessed February 17, 2012). |
| CBE/CSE | HKDE [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HKDE. |
| Bluebook | HKDE, http://www.acronymgeek.com/HKDE (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HKDE, http://www.acronymgeek.com/HKDE (optional description here) (as of Feb. 17, 2012, 04:14). |
| AMA | HKDE. Acronym Geek. February 17, 2012, 04:14. Available at: http://www.acronymgeek.com/HKDE. Accessed February 17, 2012, 04:14. |