| APA | HKCY. (2012, February 15). In Acronym Geek. Retrieved 10:19, February 15, 2012, from http://www.acronymgeek.com/HKCY |
| MLA | "HKCY." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HKCY>. |
| MHRA | 'HKCY', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HKCY> [accessed 15 February 2012] |
| Chicago | "HKCY", http://www.acronymgeek.com/HKCY (accessed February 15, 2012). |
| CBE/CSE | HKCY [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HKCY. |
| Bluebook | HKCY, http://www.acronymgeek.com/HKCY (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HKCY, http://www.acronymgeek.com/HKCY (optional description here) (as of Feb. 15, 2012, 10:19). |
| AMA | HKCY. Acronym Geek. February 15, 2012, 10:19. Available at: http://www.acronymgeek.com/HKCY. Accessed February 15, 2012, 10:19. |